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Středomořská gemologická konference 2024 GemConference.com
V květnu 2024 se uskutečnil sedmý ročník prestižní Středomořské gemologické konference, která se konala ve dvou lokalitách - v Itálii a slovinské ...
Arete Tools & AreteApp.eu at the fair in Poland and Lithuania
Successful presentation at international fairs in Gdańsk and Vilnius
In March 2024, we had the honor of representing Arete.Tools at the prestigiou...
Is it possible to distinguish laboratory -made diamonds from natural?
Although diamonds have been a symbol of beauty, wealth and indestructibility since ancient times, today's technology enables diamonds to produce sy...
Learn to use diamond screening devices. Areteworkshop.cz
AreteWorkshop is a unique opportunity for all who are in the world of jewelery, be it goldsmiths, jewelry manufacturers, forensic experts, or only ...
Weight: Guide weighing gems
Weight: Guide weighing gems
In gemology, the precise weighing of gems is essential for determining their value. This article provides a comprehensi...
Guide to Interpretation of Yehuda Sherlock Holmes results
This guide is an essential source of information for anyone using Yehuda Sherlock Holmes to detect synthetic diamonds.
Detecting laboratory diamonds in practice: interview goal deljanina and Guye Borenstein
Gemologists Branko Deljanin and Guy Borenstein discuss key topics and challenges in identifying modern laboratory diamonds, including testing of free and set stones, limiting conventional methods, or having to combine advanced techniques. Both experts emphasize that to maintain consumers' trust, the development of increasingly precise methods of detection of synthetic diamonds is necessary.
Determining the origin of the diamond using CPF (crossed polarization filters)
The CPF method uses observation of birefringing in diamonds between crossed polarizing filters to distinguish natural and synthetic stones according to typical patterns. While natural diamonds show strong irregular birefringing, synthetic have either no or regular birefringing. CPF is a quick technique for initial diamond screening, but more advanced spectroscopy is needed to confirm synthetic origin.
Assessment of white diamonds - why don't we offer a master set of cubic zirconia.
Master of stones are used to assess the color of diamonds on the D-Z scale to determine the minimum color of the degree. But cheap master sets from cubic zirconia do not have the same optical properties as diamonds, so for accurate and consistent evaluation is necessary quality set of diamond master
Measuring the size of precious stones
Diamond measurement includes basic dimensions such as diameter, length, width and depth, which are used to identify stone and analyze its parameters. Portable and affordable drawers are often used to measure, but it is necessary to use carefully to avoid damage to the diamond. Regular calibration Šupler is important for maintaining their accuracy in measuring diamonds.
Parcel Paper - a letter or envelope for diamonds
Diamond papers, also called PAPERS plots, are used to safely store free diamonds and designate details as a weight or price. Their life can be maximized by quality material and correct folding to prevent damage and loss of content. Treatment of parcel papers requires some skills for decomposition and folding to ensure the safety of diamonds.
Two types of Lab-Gown Diamonds: HPHT & CVD Synthetic Diamonds
The HPHT method creates diamonds by crystallizing carbon at extremely high pressure and temperature, while the CVD method by grows from the gaseous mixture deposits carbon atoms on a diamond substrate. Synthetic diamonds can be distinguished by natural fluorescence, phosphorescence or growth sectors, for example, there are many available devices for reliable distinction of natural and synthetic diamonds.
Diamond detective
John Chapman has developed a device to distinguish natural and synthetic diamonds using his expertise in physics and gemology. The video series "Detective Diamonds" shows the use of devices such as Jewells Inspector and Melee Inspector, for analyzing diamonds Jill. Chapman's Gemetrix company is headed by advanced tools that help reveal the true identity of diamonds.
Types of diamonds and use in screening methods
Diamonds are divided into types according to the presence or absence of nitrogen and boron in a crystalline grid, which determines their rarity, color and conductivity. While the type Ia with nitrogen is the most common in natural diamonds, the type IIB containing a boron is a blue to gray conductive diamond. Type identification using instruments such as Presidium Synthetic Diamond Screener is one of the first steps in distinguishing natural and synthetic diamonds.
History Lab-Grown / Synthetic Diamonds
American scientist Tracy Hall in 1954 successfully synthesized the diamond in General Electric laboratories, starting the era of industrial production of synthetics. To improve quality and price reduction, it is now necessary to be able to verify the origin of the diamond. However, there are reliable methods for detecting these laboratory diamonds.
