This natural Snowflake Snowflake Obsidian originates from Mexico and its weight is about 7 carats. The measurements are 14.6mm x 4.93mm (diameter x depth). The shape/cut-style of this Snowflake Obsidian is Round Cabochon. This 7.31ct Snowflake Obsidian gem is available to order and can be shipped anywhere in the world. Gemstone Certification can also be provided as an optional service.
About Snowflake Obsidian
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.
They say buy by size and give you measurements we don't use in the US. They say sizes comparable to American coins but don't say which coins equal what size they are giving............. You just have to go by size of instrument ...