Tag Archives: Synthetic gemstones

AGTA amends trade show rules, synthetic gemstones banned

April 12, 2024

The American Gem Trade Association (AGTA) has recently made revisions to its trade show regulations concerning lab-grown, man-made, and synthetic gemstones. As of the AGTA GemFair Tucson 2025, exhibitors are prohibited from showcasing loose gemstones or jewellery containing non-natural gemstones at AGTA fairs.

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Synthetic gemstones: Where knowledge is power

December 8, 2021

For many working in the industry, synthetic gemstones might be a bit controversial; however, as the old saying goes, “keep your friends close and your enemies closer.”

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De Beers launches new synthetic diamond detection technology

September 13, 2016

At the Hong Kong Jewellery & Gem Fair (which ran September 14 to 18) De Beer’s IIDGR unveiled its newest addition to their suite of synthetic detection technology. This newest addition is a compact, self-contained screening device called PhosView™.

“With rising concerns in the diamond industry around undisclosed HPHT synthetics, protecting trade confidence is critical,” said IIDGR President, Jonathan Kendall.

The device is designed to allow parcels of polished stones to be quickly and accurately … Continue reading De Beers launches new synthetic diamond detection technology

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HKD warns of undisclosed synthetic and diffusion-treated sapphires

July 24, 2014

Toronto’s HKD Diamond Lab is warning the trade to be on the lookout for six large synthetic and diffusion-treated sapphires that are being misrepresented as natural.

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Colour blind: The challenges of grading and valuing coloured gemstones in today’s market

February 1, 2013

The ‘advances’ in the business of altering gemstones are moving far more rapidly than our ability to detect and/or understand them. By the time knowledge of any specific treatment is widespread, there is often an ‘improved’ version of that technique or something totally different in the market.

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Neither faux nor faux pas–The surprising reality of synthetic gemstones

September 22, 2011

By Ron Dupuis

If it looks like a duck, walks like a duck, and quacks like a duck, it probably is a duck, right? Maybe”¦ or maybe not when it comes to gemstones.

Synthetic gemstones have the same chemical makeup as their naturally occurring counterparts. The difference is synthetics don’t originate randomly below ground through the geologic influences of nature. Instead, they are created under controlled conditions in a laboratory.

What they aren’t

… Continue reading Neither faux nor faux pas–The surprising reality of synthetic gemstones

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SSEF warns of synthetic red spinel

November 17, 2008

A resurgence in the demand for fine-quality red spinels may be the catalyst for the recent appearance of flux synthetics, says the SSEF Swiss Gemmological Institute.

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