Natural Black Diamond Gemstone

Black diamonds as well as natural fancy black diamonds are real.

Natural black diamond gemstone. It is found primarily in alluvial deposits in the central african republic and in brazil. Black diamonds are natural after the magma cooled it solidified into blue ground or kimberlite where precious rough diamonds are still found today. In lieu of the white band onyx may also have a red layer composed of sard in which case the black gemstones would be called sardonyx. Onyx is the traditional black gemstone and has been used since ancient times in jewelry and as a healing stone.

The black jet is an organic gemstone that is a variety of coal. The name onyx is commonly used to mean the black stones as chalcedony is used to refer to the white. It is an impure form of polycrystalline diamond consisting of diamond graphite and amorphous carbon. When cut en cabochon the stones luster is maximized.

They are a highly sought after precious gemstones which for centuries have been widely used in the creation and encrustation of jewellery and everyday items. However the black color in the first group is not achieved naturally. Black jet is not a pure mineral. Carbonado commonly known as black diamond is one of the toughest forms of natural diamond.

Also known as black amber because of it the similar features to that of amber. In fact the actual body color of a natural black diamond may range from near colorless to brown or olive green. Natural color black diamonds typically are completely opaque with a high luster that gives the stones an almost metallic appearance. And because these diamonds are so heavily included cutting and polishing them can be difficult.

Natural fancy black diamonds on the other hand are found in the rough with the same black color they display when they are bought. It is a variety of coal formed by various processes. It is the result of heating treatments. Onyx is a kind of agate with alternating layers of color the most popular being black and white.