BAGUE en or gris TURQUOISE de 6,07 Carats et DIAMANTS- CERTIFICAT GEMMOLOGIQUE

Grey gold : Grey gold is obtained by adding silver, manganese and copper in specific ratios to the gold alloy.
Diamond : In mineralogy, diamond is an extremely rare, precious and hard (named after the ancient Greek "unbreakable") metastable allotrope of carbon, where the carbon atoms are arranged in a variation of the face-centered cubic crystal structure called a diamond lattice.
Size : Ring size. It is often possible to reduce or enlarge the size of the ring.
Turquoise : Turquoise is an opaque, blue-to-green mineral that is a hydrous phosphate of copper and aluminium. Turquoise has been used by ancient Persians and Egyptians. Iran remains today the most important exporter of Turquoises.
Gold : Because of the softness of pure gold, it is alloyed with silver, copper or palladium. The proportion of these other metals give yellow, white gold. Without precision, the gold used in jewelry is 18 K, corresponding to 75% pure gold.