open 10 am - 7 pm
laboratory is closed
Publication
Everyone knows a green gem - an emerald, but few thought about how it is formed. Currently, all emerald deposits are divided into three categories: pegmatite, greisen and telethermal.
When we hear the word "turquoise" in our head immediately there is an idea of a light blue stone with dark veins. However, few people know that the bulk of the so-called turquoise in the jewelry market is fakes.
The generally accepted world classification system for diamonds is based on the presence or absence of nitrogen impurities in them. In accordance with this criterion, two types of diamonds are distinguished: I - nitrogen and II - nitrogen-free (low-nitrogen).
Charoite is an ornamental stone with a lilac color of different saturation. Charoite belongs to the group of pyroxenes of the subclass of chain silicates.
