Colorimeter GEMCHROMMod. EOS

Innovation & Reliabilityfor fast & accurate

Diamond Color Grading.

ReliabilityTechnological

Innovation

Precision

Index

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�. Overview

�. Package

�. Unpackaging �.� Nomenclature

�. Installation �.� Safety instruction

�. Measuring dome: the sphere

�. Theory �.� Diamond color grading �.� Diamond color scale �.� Diamond types �.� Fluorescence

�. First use

�. Setup �.� Switch off

�. Diamond color grading

��. Fluorescence

��. Self calibration

��. Printing labels

��. Maintenance and troubleshooting

��. Updating

��. Technical specification

��. Copyright

��. EC directives

��. Use of organization names

��. Warranty

��. Limited warranty and disclaimer

��. Trademark

��. Disposal

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�. OverviewThank you for purchasing EOS Diamond Colorimeter. EOS is a compact color grading instrument, it grades diamond colors with reliable accuracy simulating the human perception.

It’ s optimized by a solid housing and a user-friendly and high tech software.

It’s provided with a USB port for connecting to a Label printer.

EOS Diamond Colorimeter is an innovative instrument, designed for an ease of use: it combines quality and high technology.Product Features: · Grades diamond color of brilliant cut stones from �.�� ct to ��.�� ct (see ��. Technical specification) · Displays the color grading results in accordance to popular scale designations · Self-calibrating · Easy maintenance · Label printer for creating labels for your diamonds

�. PackageThe carton should contain:

· no. � — EOS Diamond Colorimeter · no. � — Power adaptor �� to ��� VAC (please specify) · no. � — Different adapters for following outlets: UK, USA, Australia, Europe · no. � — Label Printer DYMO® Labelwriter ��� · no. � — Metallic tool to update Software · no. � — This User Guide Please read carefully following instructions.

�. UnpackingOpen the carton and remove carefully the contents. Please check the instrument for damage and ensure that nothing is missing.Checking List: · no. � — EOS Diamond Colorimeter · no. � — Power adaptor �� to ��� VAC (please specify) · no. � — Different adapters for following outlets: UK, USA, Australia, Europe · no. � — Label Printer DYMO® Labelwriter ��� · no. � — Metallic tool to update Software · no. � — This User Guide If any item is damaged or missing, please notify the carrier and contact immediately your GEMCHROM dealer.

�.� Nomenclature

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���.� MEASURING DOME

(THE SPHERE)

ON / OFF SWITCH

7’ TOUCH SCREEN

���.�

���.�

MEASURING DOME (THE SPHERE)

REAR PART

USB PORTDC-PORT FOR POWER SUPPLYSMALL HOLE TO PRESS TO UPDATE SOFTWARE

METALLIC TOOL TO UPDATE SOFTWARE

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�. InstallationIt’s important to pay some attention to the correct positioning of the instrument: · The EOS Colorimeter is designed for an ‘indoor’ operation on a desk, for this reason you should place it on a stable and flat table, at least � cm (� inches) from any edges in order to prevent accidental falls; · Being an electronic device, it is also important to keep it away from water or from humid environments; · Protect your Colorimeter from direct sunlight and heat sources: it’s designed for internal use at room temperature; · The Colorimeter’s base is made from soft rubber.

�.� Safety instruction The Colorimeter is designed to ensure maximum safety. Nevertheless, for a safe use please follow these directions:

· Do not insert in the measuring dome any unsuitable object: it may scratch the special paint coating and damage the measuring disk (this may negatively affect the results); · Do not remove or disassemble the Colorimeter and any part of it: you may definitely damage it and its software; · Do not open or disassemble its touch screen: you may cause permanent damages in your EOS Diamond Colorimeter !

�. Measuring dome: the sphereThe measuring dome is the Diamond Colorimeter core, it grades diamond colors with reliable accuracy simulating the human perception. EOS Diamond Colorimeter has high tech optical and mechanical features, therefore handle the instrument with care: dirt and grease may

jeopardize the grading accuracy!

Do not touch the inner surface of the measuring dome and keep the lid closed when you don’t use the tool.

Always use tweezers to insert and to remove a stone: scratches caused by dropping stones inside the dome may negatively affect the color grading measurements. Colored stains on the special coated inner surfaces can also waken the measurements.

Do not touch with your hands the measuring dome. Remove any dust inside of it with spray air.

DO NOT PUT PRESSURE ON THE DISK SUPPORT!

If the white coated surface of the measuring dome is damaged or scratched, the grading accuracy may seriously be affected: please contact your GEMCHROM dealer!

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�. TheoryThis part describes the theory about diamond color grading, but it’s not required for a proper use of the device. You may skip it ant turn to chapter �. First use.

�.� Diamond color gradingEOS Diamond Colorimeter is an high tech instrument for diamond color grading simulating human perception.

Most colorless diamonds present, even if imperceptibly, a second background color such as yellow, green, brown and gray; the stones with these color hues cannot be classified as fancy diamonds and belong anyway to ‘colorless’ or ‘near colorless’ or ‘faint’ stones that make up the scale from ‘D’ to ‘M’ and down to the ‘very light yellow’ and ‘light yellow’stones arriving until the letter ‘Z’. Only after this saturation (the ‘Z’ and up) in their second color diamonds can be called ‘fancy color’. The Fancy Color Diamonds occur naturally in all imaginable colors.The best diamond color is actually a diamond that lacks color: the less color, the higher value (the exception to this is fancy color diamonds, which lie outside of diamod color scale).

The color grade is based on the saturation of the color compared to diamond color scale (at present time there are different scales used by famous gemological institutes).

�.� Diamond color scale

Afterwards you find ‘> M’.

PLEASE NOTE: The scale begins with the letter ‘D’ representing colorless. The scale continues with increasing presence of color, light yellow or brown, to the letter Z. The scale is based on the Latin letters ranging from D (the purest colorless color) and as you go down up to Z the diamond gets a yellow ting. Although most of the diamonds can be graded with a certain methodology, for some of them it is particularly difficult to determine definitely the color degree: when a diamond has a color close to the limit between one letter and the next one, the analyst’s health state (it is sufficient a common cold) may jeopardize the classification; also a strong fluorescence leads to an erroneous classification because it makes a gem whiter in our eyes. In these cases this tool is very useful and versatile.

D Colorless

Colorless

Near Colorless

Near Colorless

Faint Tinted

Faint Tinted

Light Yellow

Light Yellow

Near Colorless

Near Colorless

E

F

G

H

I

J

K

L

M

Valore Colore

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�.� Diamond typesAs classification there are � diamond Types.

Type Ia This is by far the most common type. They contain nitrogen in aggregates - or large clusters - throughout the crystal lattice. When the nitrogen atoms occur in groups of three, these aggregates absorb wavelengths of visible light on the blue end of the spectrum. As a result, the light that is reflected appears to be yellow. They can be colorless till yellow.

Type IbIf the nitrogen atoms are evenly spread out throughout the carbon lattice, then the diamond is said to be a Type Ib diamond. These diamonds absorb green light as well as blue light, and have a darker color than type Ia diamonds. Depending on the precise concentration and spread of the nitrogen atoms, these diamonds can appear deep yellow, orange, brown or greenish. Type Ib diamonds are much rarer than Ia. Type Ib and a part of Ia can be treated with HPHT process to ‘lose’ some of their color.

Type IIaThis type represents just � percent of all diamonds. Type IIa diamonds are the most rare valuable. They are exceptional because they contain very little nitrogen or non at all within the crystal lattice, so they do not easily absorb short-wave light. Remain inert when exposed to UV light shortwave, they are excellent conductors of heat, but do not conduct electricity.

Type IIbThese diamonds are extremely rare, representing only �.� percent of diamonds… These stones contain a distinct difference from the other types: boron. The presence of this element not only makes these diamonds electrically conductive, but also gives most of them a bluish or bluish gray tint. When exposed to UV light shortwave they are phosphorescent.

�.� FluorescenceFluorescence is the property of some substances, such as diamonds, to emit visible light when exposed to UV light.

The fluorescent phenomena is complex to realize because a diamond appears whiter when exposed to sunlight than under incadescent light. This is because UV light (less than 380 nm in wavelength) contained in natural sunlight causes fluorescent diamonds to emit a visible light, a fluorescence, which is commonly blue in colour.

An intense blue fluorescence, however, can make it appear almost colorless a diamond that observed in the sunlight appears yellow; if a diamond has a too intense fluorescence will be nearly opaque (by a visual observation) which will adversely affect its value.

Many fluorescent lamps emit a small amount of UV, which can produce a similar effect.

As most of the visual diamond gradings are made using fluorescent lamps, the result for the fluorescent diamonds may vary with the characteristics of the lamp and by the proximity of the diamond with the lamp itself.

Therefore Fluorescence affects their visual value grading, making, in this case, the instrument very useful.

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�. First use EOS Colorimeter is easy to use: the energy supply has a range from �� to ��� Volt.Please connect the suitable plug for your energy outlet. Press for about � seconds the main switch on the front part to turn on the EOS Colorimeter: the touch screen will turn on. To start the calibration you need to lift the lid and ensure that the measuring dome is empty.After lifting and closing the lid the Colorimeter automatically starts to check its functions and the software integrity and will start calibrating (see fig.�).

WARNING: THE MEASURING DOME MUST BE EMPTY ! IF YOU LEAVE A STONE INSIDE OF IT, THE COLORIMETER AUTOMATICALLY STARTS CALIBRATING WRONGLY ON THE COLOR OF THE FORGOTTEN STONE: THIS WILL JEOPARDIZE THE MEASUREMENTS.

After the initial calibration the touch screen displays the message: System Ready (fig.2).

Please wait at least 20 minute before use it.

Now you can use your EOS Colorimeter for diamond color grading.

�. SetupThe interactive touch screen is to be used to operate your EOS Colorimeter and has several functions.

The touch screen is very user-friendly and it is used to: · Operate with your Colorimeter · Insert your own interest classification/grading fields · Show the diamond color grading results · Display information and error messages · Insert the information/results to be printed · Update the software

You can select different Options (See fig.�):

You can choose from the following display options: · The reference institute for diamond color grading (GIATM, IGITM, HRD™) · Fluorescence measurement (ON — Yes; OFF — No) · Diamond color grading results: - color scale letter (fig.��) (D, D/E, E, E/F ecc.) - color scale letter and relative color bar with mark (fig.��) · Date format: dd-mm-yy · Time format: hh-mm · Customer: insert the customer/company name (if you want) · Language : select the language you prefer

fig.�

fig.�

fig.�

(ITALIAN — ENGLISH)

After completing these tasks, press ‘Apply’ (see fig.�) to confirm and to turn back to the Home Page.Press ‘Back’ (see fig.�) to return to the Home screen if you don’t need any further selectionPress ‘About ?’ (see fig.�) to display the User Licence.

Your selections will be saved for later measurements.

�.� Switch offPlease press for few seconds the main switch and then release it.

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fig.�fig.� fig.�

�. Diamond color gradingThis device is calibrated for grading natural diamond and not its imitations.Open the lid and place the diamond to be graded on the transparent disk in the measuring dome using tweezers. Place the stone with its table facing down. For best and reliable results keep the stone table clean by using a proper cloth.

Carefully center the stone over the light source by using the centering lever on the front part of the Colorimeter (see fig.�). Please check if the stone remains in the centre and does not move due to electrostatics energy.

Close the lid and press on the touch screen ‘measure’ (see fig.�).The grade letters and the hue will appear in the centre of the display after few seconds: after �� seconds if Fluorescence ON or �� seconds if Fluorescence OFF. After few seconds (ca. �� sec.) the grade letters and the hue will appear in the centre of the display. Remove immediately the stone and leave the measuring dome empty, you allow consequently a potential calibration.See figures �� – �� – �� (if Fluorescence ON) - �� (if Fluorescence OFF) for a typical result; (It differs depending on the options selected - see chapter �. Setup).Press ‘Info’ (see fig.�) if you want to compare the color grading with the other institutes scales as you can see in fig.��.If you want to proceed immediately with another test, press ‘Back’ and then Home (see fig.��).

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fig.��

fig.��

fig.��

fig.��

fig.� fig.��fig.�

fig.� — centering lever

fig.��

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��. FluorescenceLo strumento rileva � differenti gradi d’intensità:

EOS Colorimeter detects fluorescence automatically and it grades the diamond color. If you want to display the fluorescence, press FLUORESCENCE: ON on the main page ‘Options’. (see fig.�). If the Fluorescence is ON EOS will grade diamond color in ca.�� sec, whereas if the Fluorescence is OFF EOS will grade diamond color in ca.�� sec.The system will reboot automatically when you change fluorescence grading from OFF to ON: when you want to change fluorescence detection, enter the ‘Options’ display and select Fluorescence ON, confirm pressing APPLY. Then you’ll see a warning message and then the system will reboot.

��. Self calibrationThe instrument automatically calibrates every �� min to assure maximum precision. When it calibrates the touchscreen displays ‘CALIBRATION RUNNING, DO NOT OPEN SPHERE’. (see fig.��).

Please follow this procedure:�� — Let the Colorimeter switched on�� — The sphere (measuring dome) must be EMPTY �� — If the touch screen displays ERROR: please open the measuring dome, take out the stone inside and close the lid�� — It displays ‘CALIBRATION RUNNING’

�� — DO NOT OPEN THE LID�� — It lasts about �� seconds�� — When the calibration is complete, you can perform other measurements

��. Printing labelsYou can print your own labels, please connect the Colorimeter to the relative DYMO® Labelwriter 450: plug the Label printer into the outlet (power supply) and the connection cable into the port on the rear part. Press ‘Print’ on display (see fig.��); select the information to be printed into the preset fields (see fig.��). Please press ‘Shift’ if you want to have upper-chase letter on the present small keyboard.

Once you selected all the information of your own interest, press ‘Print’ (see fig.��) on the display to have your own label printed. Labels are adhesive (��mm x ��mm HxW), mod. S0722540. Custom label information is stored in the Colorimeter memory, so it’s not necessary to reset or select again.Please press ‘Back’ (see fig.��) if you want to turn to the Home screen.

fig.��a

Nulla — None

Debole — Slight

Media — Medium

Forte — Strong

NONE

SL

MED

STR

Fluorescenceita — eng

Fluo(Monitor EOS)

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��. Maintenance and troubleshootingThe Colorimeter does not need special care, you should clean it by using a soft cloth for the outer surface and for the display. DO NOT USE detergents, hard clothes, brushes or other tools for the measuring dome (the sphere). For a proper cleaning of this part use ONLY compressed air spray.

DO NOT INSERT any object which may scratch or damage the inner white surface. Scratches caused by dropping stones inside the dome may negatively affect the color grading. Colored stains on the special coated surfaces can also waken the measurements. Do not touch with your hands the measuring dome. If the white coated surface of the measuring dome is damaged or scratched, the grading accuracy may seriously be affected: please contact your GEMCHROM dealer.

EOS Colorimeter automatically calibrates every �� min to assure maximum precision. When it calibrates the touchscreen displays ‘CALIBRATION RUNNING, DO NOT OPEN SPHERE’; If you open the sphere at this stage it will appear following message ‘ERROR, close the sphere, Calibration running’.

Please follow this procedure:�� — Let the Colorimeter switched on �� — The sphere (measuring dome) must be EMPTY �� — If the touch screen displays ERROR: please open the measuring dome, take out the stone inside, close the lid�� — It displays ‘CALIBRATION RUNNING’�� — DO NOT OPEN THE LID�� — It lasts about �� seconds�� — When the calibration is complete, you can perform other measurements

The result D+ for all the three Institutes is an anomaly, please follow this procedure:�� — The Lid of the measuring dome has not been closed properly �� — Open the lid�� — Center the stone to be graded again; check that the centering mechanism is returned regularly�� — You can perform now another measurement

If the displayed result is obviously incorrect, please switch off and restart the instrument.In case of any system anomalies, please switch off and restart the instrument.

fig.��

fig.�� fig.��

��. UpdatingThe instrument does not require any software update. If necessary, GEMCHROM S.R.L. will update the software by sending an USB Key, please follow the procedure below.

You need:�� — USB Key with updating software�� — Metallic tool to update software (included in the packing list)

WARNING: DO NOT ALTER OR MODIFY THE CONTENT OF THE SUPPLIED USB KEY AND/OR DO NOT LOAD ANY OTHER FILE ON IT!

Please follow the procedure below:�� — In HOME page press OPTIONS (see fig.��)�� — In the ‘Options’ screen press ABOUT (see fig.��) �� — In the ‘Information’ screen press UPDATE

If you don’t want to update and you are in the ‘Update’ screen, do not follow the procedure, just press ‘Back’ till you are in the Home page.

If you want to perform the update, follow the displayed procedure:

�� — Insert the usb key into the relative port in rear part of the instrument; �� — Insert the metallic tool into the small hole in the rear part of the instrument: you have to press the button inside the small hole for updating the software.

After these two operations, the updating process starts automatically and it’s no longer suspendable. You have to wait for its conclusion without any intervention.

At the beginning it will test the validity of the updating process on the memory package, and if

applicable, the procedure will start. Otherwise, an error message will be displayed.

The update process can last several minutes, during this time they may appear lines or random images: this behaviour is normal, there is no irregularity.

After updating the system will automatically restart and once the graphical interface appears, the upgrade becomes effective and usable.

The procedure is completed.

When the update process is running, it is important to follow these precautions: · Do not remove the USB key. Do not touch and move the USB key: you may interrupt and affect adversely the upgrading process data; · Do not switch off the Colorimeter, leave the adapter plugged in. Avoid any energy supply interruption: if it’s necessary connect the colorimeter to an UPS or another external battery; · Do not press the main power switch; · Do not touch the touch screen.

If you do not follow these recommendations, it is possible that the procedure will not be successful and that they create irreversible damage to the system.

fig.�� fig.��

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��. Technical specification

All diamond clarities.Exceptions:

�� — Diamonds with damaged /chipped culet may be

classified incorrectly�� —Diamonds with clarity

SI1, SI2, P1, P2 and P3 may be classified incorrectly:

since large or colored inclusions, inclusions in the center may

affect and jeopardize the color measurement

(this occurs especially with stones smaller than �.�� ct).

Diamond types

Clarity

Diamond sizes

Loose brilliant cut diamonds

From �.�� ct to ��.�� ct

Fluorescen

Grading accuracy

Generated Fluorescence by a

UV ���nm light

± 0.30 Gradethe scale is set from

‘D’ to ‘M’ and one grade is the average separation between

two next color hues, for example E and F.

This value refers to consecutive and repeated

measurements on a single stones (test-retest reliability).

Measurement carried out at 25°C, after warming

up the instrument.

Supported printer

Diamond color grading

Color grading scales

DYMO® Labelwriter 450

USB interfaceAdhesive labels ��mm x ��mm

mod. S0722540

Hues of yellow, cape series, based upon D, E, F, G, H,

I, J, K, L, M (over M) color scales (based

on user-selected grading institute).

Warm-up �� minutesThe instruments

also works immediately after

the start, but its performance is

lower, especially if located at

the extremes of operating

temperature.

GIATM, IGITM, HRD™

Grading time <�� s after correct positioning and

pressing “Measure” if fluorescence is ON.

<�� s after correct positioning and

pressing “Measure” if fluorescence is OFF

Calibration Automatically by turning on the instrument

and while using

User’s interface 7’ touch screen

Fluorescence grades

� grades: None, Slight,

Medium, Strong Lamp life Usually ���� hours, ca � Million

measurements

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��. CopyrightAll rights reserved, this manual is covered by copyrights. No part of this manual covered by copyrights hereon may be reproduced, stored or transmitted in any form or by any means without prior permission of the copyright holder. Requests for permission should be addressed to GEMCHROM S.R.L.

��. EC DirectivesThe European directives stating EC marking requirements are following: · Electromagnetic Compatibility (EMC) 2014/30/EU · Low Voltage Directive (LVD) 2014/35/EU

The compliance with the above mentioned Directives is corresponding to following rules: · CEI EN 61326-1 — Ed. ���� Electrical Equipment for Measurement, Control and Laboratory Use Part. �: General Requirements for electromagnetic compatibility; · CEI EN6100-3-2 — Ed. ���� Electromagnetic Compatibility (EMC) Part �-�: Limits - Limits for harmonic currents (equipment with input current <= ��A per phase); · CEI EN61000-3-3 — Ed. ���� Electromagnetic Compatibility (EMC) Part �-�: Limits - Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage systems supply systems <= ��A and non subjects to conditional connection; · CEI EN 61010-1 — Ed. ���� Safety Requirements for electrical Equipment for Measurement, Control and Laboratory Use. Part �: General Requirements.

Power supply

Operating temperature

Humidity

Dimensions

Packaging size

Electrical power

Storage temperature

Safety class

Weight

Only with the supplied power adapter.

The power supply supports input voltage:

from �� to ��� VAC / ��-��Hz, it is equipped

with n°� different adapters for following outlets :

UK, USA, Australia, Europe.

From ��°C to ��°C from ��°F to ���°F

�� – �� % RH non condensing

W

W

cm

cm

��.�

��

��.�

��

�.�

��.��

��.�

��.��

�.�

��.�

��

��.�

��

inches

inches

kg

H

H

D

D

�W (max ��W)

From �°C to ��°C from ��°F to ���°F

IP20 according to IEC-60529

(only for indoor use)

� Kg — (�.�� lbs)

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— (��.�� lbs)

��. Use of organization namesThis instrument uses symbols and names of certain institutes /organizations such as: GIATM, IGITM, HRD™.The use of these names and/or symbols in this manual or displayed by the product, does not mean that these organizations endorse or approve the product or that there is any kind of agreement with them.

��. WarrantyGEMCHROM S.R.L. warrants you EOS Colorimeter to be free from defects in materials and workmanship for as long as it is owned by the original retail purchaser, all the electronic components, hardware, coated surfaces are warranted for a period of one (1) year from the date of original purchase. The warranty is extended as shown below: · In case of malfunction, please contact your GEMCHROM Dealer and notify the defect by providing model, serial number and also conditions of use of the instrument.; · After delivering and after an accurate analysis GEMCHROM S.R.L. reserves the right to choose whether to repair or replace the tool. If the warranty period is still valid, the retailer GEMCHROM will repair or replace it at his own expenses. · Shipping costs are charged to the customer; · In the event the instrument is not defective, GEMCHROM S.R.L. will decide whether to charge the customer the incurred costs (for analysis and logistics) · Our warranties do not apply to your misuse, carelessness, inattention, neglect, long use, chemical corrosion, improper installation or storage; · This warranty does not apply to your changes, modifications and alterations of the instrument

or of parts of it are carried out without any written permission by GEMCHROM S.R.L.: they (the modifications…) absolve GEMCHROM S.R.L. from any responsibility; · Parts subject to normal use and/or perishable parts are not covered by warranty; · In no event GEMCHROM S.R.L. is liable for any consequential, direct or indirect, incidental cost (including damages for loss of business, profits or business interruption) caused by use of or inability to use the instrument or this manual; · This warranty does not cover anything that has not expressly disclosed, the same for damages, injuries or costs resulting from defects of the Colorimeter itself; · Once the Instruments has been purchased, You implicitly agree with the warranty terms.

ADDITIONALLY, ANY INSTALLATION, MAINTENANCE, REPAIR, SERVICE, RELOCATION OR ALTERATION TO OR OF, OR OTHER TAMPERING WITH, THE PRODUCTS PERFORMED BY ANY PERSON OR ENTITY OTHER THAN US (GEMCHROM S.R.L.) WITHOUT OUR PRIOR WRITTEN APPROVAL, OR ANY USE OF REPLACEMENT PARTS WE HAVE NOT SUPPLIED, WILL IMMEDIATELY VOID AND CANCEL ALL WARRANTIES WITH RESPECT TO THESE DEVICE SERVICES AND THE AFFECTED PRODUCTS

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��. Limited warranty and disclaimerGEMCHROM S.R.L. reserves the right to change this user guide at any time and without notice.GEMCHROM S.R.L. disclaims the fitness for a ‘legal business use’ of the device: the results provided by the measurements (displayed, printed or others) are only for your internal reference.Our warranty does not apply to your misuse ore neglect, follow this essential directions: · Keep the Colorimeter properly, when you do not use it, unplug it and keep the lid closed; · Keep operating area clean. Grease or dust which may form after few days, though invisible, may affect the results, expecially in case of stones with higher hue; · Place the diamond to be graded with its table facing downward, center it carefully by using the centering lever ont the front part; it’s essential to center it carefully for a proper measurement; · EOS Colorimter measurers color, but it does not replace a gemological expertise. GEMCHROM S.R.L. is not responsible for the expertises/analysis carried out by you, EOS Colorimeter does not certify a stone in all its qualitative characteristics and natural varieties; · Diamonds with damaged / chipped culet may be classified incorrectly; · Diamonds with clarity SI1, SI2, P1, P2 and P3 may be classified incorrectly: since large or colored inclusions, inclusions in the center may affect and jeopardize the color measurement especially with stones smaller than �.�� ct; · This instrument uses symbols and names of certain institutes/organizations such as: GIATM, IGITM, HRD™. The use of these names and/or symbols in this manual or displayed by the product, does not mean that these organizations endorse or approve the product or that there is any kind of agreement with them.

��. TrademarkGEMCHROM S.R.L. and the logo GEMCHROM S.R.L. - Diamond Techonology Innovation are a trademark of GEMCHROML S.R.L. (all rights reserved). The company name and the device in this document are registered and belong to:

GEMCHROM S.R.L.Via Segherie 1238030 CASTELLO-MOLINA DI FIEMME (TN) ITALYT. (+39)0462 342662P. IVA 02364350229

��. DisposalFor disposal please refer to you national / local regulations and directives regarding ‘waste electrical and electronic equipment disposal’.

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InnovationCollaboration

GEMCHROM S.R.L.

via Segherie 1238030 Castello-Molina di Fiemme (TN) — Italy

info@gemchrom.comT. (+39) 0462 342662P. Iva 02364350229