And again a holiday!
On a big Orthodox holiday, nature at the quarry of the Amber Combine made a gift to the amber miners of Kaliningrad - on April 7, the first amber nugget this year was found. The weight of the nugget was 1546 grams. Amber matte honey-yellow color. Morphologically, the nugget is represented by a rounded slightly flattened chipped nodule. On the undamaged surface of the nugget there is a thin yellowish-brown crust. The stone was named after the holiday on which it was found - the Annunciation.
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.