Emerald and beryl - what's the difference?
To answer, we need to distinguish between two concepts - the mineral species and variety.
A mineral species is a group of minerals with a similar chemical composition and the same crystal structure.
Mineral varieties are minerals of a certain type and differing in their physicochemical properties or the composition of impurities.
Now back to our question. Beryl is a mineral species, belongs to the class of silicates and has the formula Al2 [Be3 (Si6O18)]. In connection with the possibility of entering into the structure of beryl various impurities, it has several varieties that differ in colors. One of them is an emerald, the green color of which is caused by the replacement of Al in the structure of beryl with Cr or V and Fe.
Of course, not necessarily.
Gemological examination can be carried out both for loose stones and for stones, which are inserts in jewelry.
The technology of engraving the numbers of expert opinions on diamond gangsters was first used by the US GIA laboratory in the early 2000s