These natural Black White Snowflake Obsidians originate from Mexico and their total weight is about 25 carats. The measurements are 17.78mm x 13.15mm x 6.28mm (length x width x depth). The shape/cut-style of these Snowflake Obsidians is Cushion Cabochon. These 24.87ctw Snowflake Obsidian gems are 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.
I have not made a lot of purchases from GemSelect, but have been very satisfied with those that I have. The quality of the gems has been good, and I like the pictures provided of the actual gemstones being reviewed. I will certainly be back for more at another time.