Black Silk Stone

History
Black silk stone is an onyx marble with a beautiful, silky-smooth surface and satin finish. It features black banding that wraps around a grey-to-white background.The Romans were experts at glyptography (the carving of layered stones to reveal different colors) and crafted beautiful seals from onyx (white layer over black base) and sardonyx (white layer over reddish-brown base). The patterns were cut in negative relief. Engravings with a negative picture are called intaglios and those with raised image are cameos. In the Middle East, onyx was associated with sorcerers.

Metaphysical Properties
Black silk stone is a nurturing gemstone. The gemstone is believed to enhance patience and clear thinking. Black silk stone is also thought to promote self-control and inner tranquility.