Snowflake Obsidian is a gorgeous form of Obsidian with inclusions of Cristobalite, which create the snowflake like appearance! It takes an excellent polish, with the beautiful white snowflakes on a black background, this helps it work into some amazing and captivating cabochons! Obsidian can also be great for knapping!
Measurements (inches - longest - approx): 6.5 x 4 x .28
The last photo has been taken dry so that you may see any defects. The other photos have been taken wet and in natural lighting to simulate a polish.