This natural Gold Sheen Obsidian originates from United States and its weight is about 20 carats. The measurements are 25.2mm x 19.49mm x 5.58mm (length x width x depth). The shape/cut-style of this Obsidian is Oval Cabochon. This 20.04ct Obsidian gem is available to order and can be shipped anywhere in the world. Gemstone Certification can also be provided as an optional service.
Obsidian is a naturally occurring volcanic glass. It is formed when felsic lava extruded from a volcano cools without crystal growth. Obsidian has been known since prehistoric times, and has some fascinating properties as well as some important practical uses. In addition to its use as a gemstone, obsidian has been used in cardiac surgery, as well-crafted obsidian blades have a cutting edge many times sharper than high-quality steel surgical scalpels.
In some stones, the inclusion of small, white, radially clustered crystals of cristobalite in the black glass produce a blotchy or snowflake pattern, and this is known in the gem trade as snowflake obsidian.
Well it certainly looks good but since this is my first purchase I won't know until I receive my item I have purchased from other well known gem dealers and I am strictly an amateur . I just know what I want when I want it and I was delighted at finding the gem I was looking for and it is so beautiful in person I'm just thrilled!