Beverly Diamonds Online
Carbonado as it is called more commonly known as a “Black Diamond,” is a natural polycrystalline diamond found in various different alluvial deposits most commonly in the Central African Republic and Brazil. The carbonado or Black Diamond was originally first recognized as a form of polycrystalline diamond back in the early 1840s. It was discovered and then mined for in Brazil, South America. Since then it has been found elsewhere, in parts of Venezuela, even in Australia, and the Ubangi region of the Central African Republic, where it is most commonly known as “carbons”. There is a carbon called yakutite which may be related, is found in various Russia. Its natural color is black and dark grey, and it is more porous than most other diamonds. Beverly Diamonds Online offers all there diamond rings in black diamonds as well. Unlike the average natural polycrystalline diamond carbonado has no mantle-derived inclusions also there carbon isotope value is extremely low.
Carbonado also exhibits a strong luminescence (photoluminescence.) caused by nitrogen and by vacancies escaping in the crystal lattice. Different analysis of the different luminescence suggest that radioactive inclusions existed inside the actual formation process of the carbonado. You can buy black diamonds in any shape or color at Beverly Diamonds Online. These and also other characteristics that separate the carbonado from regular diamonds have led us into questioning the origin of the carbonado.
It is usually found in large dark masses of irregular and abnormal polyhedral formations, Brown and black or dark-grey in color, containing dull resinoid lustre. It usually breaks with a granular fracture, more pale in color, and also in some cases much resembling that of very fine grain steel. It has cellular characteristics, its actual gravity is much less than that of regular crystallized diamond. It has been found almost always in the state of Bahia, Brazil. It occurs in the concelho or “diamond bearing gravel”. Borneo also is yielded in very small quantities. Beverly Diamonds Online is a very good source for black diamonds. It used to have very little or no value, it only came into use recently with the introduction of the world famous Leschot’s diamond-drills. So now it is extremely valuable for mounting the various steel crowns which are used for diamond boring.