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.
Black Silk Stone 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.
Black Silk Stone Geological Properties
Onyx is a form of chalcedony, which is a microcrystalline quartz formed in the gas cavities of lava. Its multi-layered structure is similar to that of agates. As with any onyx, black silk stone is found worldwide.
Opaque-gray / black
1.486 - 1.658
Proper Care of Black Silk Stone
Black silk stone can be safely cleaned with cool water and a mild soap. Wipe the surface with a soft cloth. Be sure it is dry before storing or wearing. it should not be cleaned with harsh chemicals (they can seep in and alter the color of the stone), steamers or ultrasonic cleaners. Even mild detergents are not recommended.
To learn more about black silk stone and other gemstones, order your copy of Walter Schumann's revised and expanded edition of Gemstones of the World.
Designing with Black Silk Stone
The soft nature of the stone (Mohs hardness 4) makes it an ideal choice for use in short necklace and earring designs that are protected from heavy abuse.
Black is neutral, making black silk stone a great design element to combine with many different gemstone colors and all metal tones. Its deep, dark, lustrous surface can play a striking contrast to warm-colored gemstones like garnet, carnelian and coral. Or, combine black silk stone with any gemstone containing a black matrix such as lapis lazuli, rhodonite and turquoise to heighten the vein detailing.
**Please note that all metaphysical or healing properties listed are collected from various sources. This information is offered as a service and not meant to treat medical conditions. Fire Mountain Gems and Beads® does not guarantee the validity of any of these statements.
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