open 10 am - 7 pm
laboratory is closed
What is a IAG and GGG?
ЯндексПереводчик
First, decipher:
- yttrium aluminum garnet
- gallium gadolinium garnet.
It is an artificial material used in jewelry as inserts in products. In particular, they are used as imitations of a diamond, but rarely because of the strong difference in properties.
The name "garnet" was assigned to these compounds in connection with a similar natural garnet crystal structure.
BUT! It is important to know that these compounds have no natural analogues and therefore can not be called synthetic.
В геммологической практике бывают весьма увлекательные случаи с диагностикой ювелирных вставок
Но помимо редкости цвета и высокой стоимости таких камней, многие розовые камни выделяются одной замечательной особенностью – они проявляют плеохроизм, то есть в зависимости от положения осмотра камня он может иметь дополнительные оттенки – оранжевый или пурпурный.
Currently, gemstones are produced by two fundamentally different technological methods - the High Pressure - High Temperature method (“HPHT”, High-pressure & High-temperature) and the Chemical Vapor Deposition (“CVD”, Chemical vapor deposition) method. The "HPHT" method is the most tested classical synthesis method, which can be used both carbon deposition on diamond from flux melts and catalytic reactions. In "CVD" synthesis, diamond growth occurs on a seed during carbon deposition mainly from a gaseous medium at relatively low temperatures and pressures.
Jewelry and precious stones are just such a category of goods, when buying which you need to pay attention to many criteria.
Sogdianite is a rather rare mineral and more often it can be found as a collection material (moreover, in systematic collections), and it is extremely rare in jewelry.