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
The French Gemmology Laboratory has been equipped with a latest-generation DiamondView since 2006.
The Santa Maria variety of aquamarine : never heated
In Color, All about Colored Gemstones, Summer 2013, n° 23
YELLOW-BROWN SYNTHETIC DIAMONDS FOUND IN “MIXED” DIAMOND BATCHES
The French Gemmology Laboratory (LFG) has just analysed several thousand yellow-brown diamonds commercially referred to as “cognac” diamonds…
AN EXTRAORDINARY DOUBLET MOUNTED ON A FINE JEWELLERY RING
The LFG recently had the opportunity to study a white gold ring, decorated with an oval green stone…