Black Onyx Necklace

Black onyx necklace

Onyx is a cryptocrystalline form of quartz. The colors of its bands range from white to almost every color (save some shades, such as purple, blue and black). Commonly, specimens of onyx available contain bands of colors of white, tan, brown and black. Sardonyx is a variant in which the colored bands are sard (shades of red) rather than black. Pure black onyx is common, and perhaps the most famous variety, but not as common as onyx with banded and black colors.

It has a long history of use for hardstone carving and jewellery, where it is usually cut as a cabochon, or into beads, and is also used for intaglio or cameo engraved gems, where the bands make the image contrast with the ground. Some onyx is natural but much is produced by the staining of agate.

The name has sometimes been used, incorrectly, to label other banded lapidary materials, such as banded calcite found in Mexico, Pakistan, and other places, and often carved, polished and sold. This material is much softer than true onyx, and much more readily available. The majority of carved items sold as 'onyx' today are this carbonate material.

The above description an explanation about the onyx stone, I now explain about the pictures necklace onyx, behold clearly some black necklace with onyx materials, made by hand neatly and details, incredible, first remark as seen, when you wear it looks graceful and beautiful, black onyx is one of the rare, small dots threaded into one.