The object specifies whether we have received a single stone, a batch or a jewel, and the type of jewel.
The shape, cut and dimensions describe the external appearance of the stone. When you deposit a jewel with several stones, or batches, we note the diametrical variation of the batch.
The shape, size and dimensions describe the external appearance of the stone. When you deposit a jewel with several stones, or batches, we note the diametrical variation of the batch.
The weight of the stones is indicated in carats (1ct = 0.2 g) to two decimal places.
Rounding is done according to the 3rd decimal place: if it is less than 9 then no rounding, if it is equal to 9 then round up. For example: 0.9990 ct is 1.00 carat but 0.9989 ct is 0.99 carat.
In the case of jewellery set with stones, it is weighed in grams to two decimal places. The rounding rule that applies is the arithmetic rounding.
LA SCIENCE AU SERVICE DES GEMMES • Depuis 1929
30, Rue de la Victoire • 75009 Paris • tél. +33 (0)1 40 26 25 45
SASU au capital de 100 000€ € • SIRET : 52909868300012 • RCS Paris B 529 098 683
APE : 7490B (activités spécialisées, scientifiques et techniques diverses) • TVA intracommunautaires : FR89529098683
contact@lfg.paris • https://www.laboratoire-francais-gemmologie.fr/
Our reports are based on accredited analysis procedures, taking into account the latest scientific articles published.
We offer 3 categories of reports, depending on your needs.
A 1st identification before stock purchases or stone recutting - Paper letter in A4 format.
The classical and complete analysis report for the end-buyer - A5 bristol booklet.
The prestigious, tailor-made analysis report, highlighting the exceptional stones and jewels - A4 landscape format triptych folder.
