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Interesting minerals of charoite rocks. Frank-Kamenetsky - Frankamenite
In 1995, in honor of the famous scientist, Viktor Albertovich Frank-Kamenetsky (1915-1994), a new mineral found in charoite was named - francamenite. The mineral is characterized by crystalline precipitates of predominantly gray color with violet and greenish tints. Viktor Albertovich, like no one else, deserved to perpetuate his memory in one of the charoite minerals. Occupying the post of chairman of the Commission for New Minerals of the RMO (1964-1994), he defended the priority of Russian researchers headed by V.P. Rogova. (born 1934) in the discovery of a new mineral - charoite.
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.