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Why does a gemological examination need a modern buyer?
Today, in order to buy a product or service of proper quality, it is necessary to understand the nuances of its choice. Often this is due to a very narrowly focused professional field of activity. Jewelry and precious stones are just such a category of goods, when buying which you need to pay attention to many criteria.
The buyer immediately faces a lot of questions:
"What kind of stone is in the product? Does it correspond to the stated data? What is the cost of the stone should be at its parameters?"
And many others.
The first source where a potential buyer turns to is the Internet. However, filtering out the necessary and correct information is not an easy task. In this regard, there is a risk of falling for the bait of scammers or greatly overpaying.
The gemological laboratory can understand the nuances of evaluation and competently advise on the purchase of precious stones and jewelry. There, the meeting of the buyer and seller is a frequent practice.
Since the gemological center is independent, the buyer can hear an objective opinion about the subject of the proposed purchase. If there are already documents for a stone or a product, the laboratory can check the compliance of the data indicated there with the real parameters of the stone. In the absence of such, in the gemological center, you can get a certificate of conformity or an expert opinion, as well as a cost consultation based on the quality parameters of the stone.
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.
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.
Tauson Lev Vladimirovich (October 27, 1917 - November 23, 1989), an outstanding Soviet geologist and geochemist, member of the USSR Academy of Sciences (since 1981).