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Quite often, stones or products with stones purchased in India are brought to our laboratory, and in most cases the stones are fakes.

Of course, not necessarily.
Gemological examination can be carried out both for loose stones and for stones, which are inserts in jewelry.

To answer, we need to distinguish between two concepts - the mineral species and variety.

The technology of engraving the numbers of expert opinions on diamond gangsters was first used by the US GIA laboratory in the early 2000s

To obtain bright blue, blue and ultramarine flowers, the stone is subjected to various methods of exposure.

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