![Largest CVD synthetic diamond identified in France](https://www.laboratoire-francais-gemmologie.com/wp-content/uploads/2019/03/diamant-CVD.jpg)
![Largest CVD synthetic diamond identified in France](https://www.laboratoire-francais-gemmologie.com/wp-content/uploads/2019/03/diamant-CVD.jpg)
![Teated synthetic moissanite by coating](https://www.laboratoire-francais-gemmologie.com/wp-content/uploads/2018/09/Figure-3-1080x675.jpg)
Teated synthetic moissanite by coating
By Aurélien Delaunay
![LEAD GLASS TRAPICHE RUBIES](https://www.laboratoire-francais-gemmologie.com/wp-content/uploads/2018/09/RUBIS-TRAPICHE-DE-20.37CT.jpg)
LEAD GLASS TRAPICHE RUBIES
Since 2004, treating corundum (primarily rubies) by filling fractures with lead glass has continued to develop.
![Dernières connaissances en matière de luminescence des gemmes](https://www.laboratoire-francais-gemmologie.com/wp-content/uploads/2018/09/gemoloty-summer-2011.jpg)
Dernières connaissances en matière de luminescence des gemmes
Gems & Gemology, Vol 47, n°2, Summer 2011
Pinctada Margaritifera Cultured Pearl with Baroque-Shaped Nucleus
G & G January 10, 2013 Volume 4, No. 4
![SYNTHETIC CORUNDUM SCULPTED TO IMITATE NATURAL CORUNDUM](https://www.laboratoire-francais-gemmologie.com/wp-content/uploads/2018/09/FIGURE-2-8.jpg)
SYNTHETIC CORUNDUM SCULPTED TO IMITATE NATURAL CORUNDUM
Those who frequently travel to gem deposits to buy rough stones quickly come to understand that a sword of Damocles hangs over them…
![A “SECRET OPTICAL JEWEL” UNDER STUDY AT THE LFG PHOTO-MICROSCOPIC JEWEL BY RENÉ DAGRON](https://www.laboratoire-francais-gemmologie.com/wp-content/uploads/2018/09/10-DERNIERS-SOUVERINS-DE-RUSSIE.jpg)
A “SECRET OPTICAL JEWEL” UNDER STUDY AT THE LFG PHOTO-MICROSCOPIC JEWEL BY RENÉ DAGRON
The French Gemmology Laboratory recently had the opportunity to analyse an exceptional jewel.
![DIAMONDVIEW™, CONCEPT AND USE AT LFG](https://www.laboratoire-francais-gemmologie.com/wp-content/uploads/2018/09/diamondview.jpg)
DIAMONDVIEW™, CONCEPT AND USE AT LFG
The French Gemmology Laboratory has been equipped with a latest-generation DiamondView since 2006.
![The Santa Maria variety of aquamarine : never heated](https://www.laboratoire-francais-gemmologie.com/wp-content/uploads/2018/09/aigue-marine-non-chauffe.jpg)
The Santa Maria variety of aquamarine : never heated
In Color, All about Colored Gemstones, Summer 2013, n° 23