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OUR PUBLICATIONS

Largest CVD synthetic diamond identified in France
PUBLICATIONS

Largest CVD synthetic diamond identified in France

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Teated synthetic moissanite by coating
PUBLICATIONS

Teated synthetic moissanite by coating

By Aurélien Delaunay
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LEAD GLASS TRAPICHE RUBIES
PUBLICATIONS

LEAD GLASS TRAPICHE RUBIES

Since 2004, treating corundum (primarily rubies) by filling fractures with lead glass has continued to develop.
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Dernières connaissances en matière de luminescence des gemmes
PUBLICATIONS

Dernières connaissances en matière de luminescence des gemmes

Gems & Gemology, Vol 47, n°2, Summer 2011
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PUBLICATIONS

Pinctada Margaritifera Cultured Pearl with Baroque-Shaped Nucleus

G & G January 10, 2013 Volume 4, No. 4
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SYNTHETIC CORUNDUM SCULPTED TO IMITATE NATURAL CORUNDUM
PUBLICATIONS

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...
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A « SECRET OPTICAL JEWEL » UNDER STUDY AT THE LFG PHOTO-MICROSCOPIC JEWEL BY RENÉ DAGRON
PUBLICATIONS

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.
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DIAMONDVIEW™, CONCEPT AND USE AT LFG
PUBLICATIONS

DIAMONDVIEW™, CONCEPT AND USE AT LFG

The French Gemmology Laboratory has been equipped with a latest-generation DiamondView since 2006.
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The Santa Maria variety of aquamarine : never heated
PUBLICATIONS

The Santa Maria variety of aquamarine : never heated

In Color, All about Colored Gemstones, Summer 2013, n° 23
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YELLOW-BROWN SYNTHETIC DIAMONDS FOUND IN “MIXED” DIAMOND BATCHES
PUBLICATIONS

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...
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AN EXTRAORDINARY DOUBLET MOUNTED ON A FINE JEWELLERY RING
PUBLICATIONS

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...
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FIRST SYNTHETIC DIAMONDS BROUGHT TO LFG
PUBLICATIONS

FIRST SYNTHETIC DIAMONDS BROUGHT TO LFG

Synthetic diamonds have been the subject of numerous studies since they were first created in the 1950s.
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AN EXCEPTIONAL PEZZOTTAITE AT THE LFG
PUBLICATIONS

AN EXCEPTIONAL PEZZOTTAITE AT THE LFG

Pezzottaite is a relatively new mineral, discovered in 2002 in Madagascar...
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AN UNUSUAL FILLED RUBY, LIKELY OILED
PUBLICATIONS

AN UNUSUAL FILLED RUBY, LIKELY OILED

A 12.12 ct rectangular red stone with cut edges (Figure 1) was submitted to the LFG.
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CONTACT US :

contact@lfg.paris
(+33) 01 40 26 25 45
30, rue de la Victoire - 75009 Paris
Monday - Thusday : 9H30 to 17H00
Friday : 9h30 to 16h30
Withdrawal files at same days and time

   

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