Obsidian Snowflake - 10 pounds Rough Stone These flashes are due to

These flashes are due to the presence of feldspar crystals

Luster: The luster of fluorite varies depending on its crystal structure and surface finish

Hardness: The hardness of septarian nodules varies depending on the minerals present in the concretion

smooth exterior and are easier to break than rough geodes

Obsidian Snowflake - 10 pounds Rough Stone These flashes are due toLocality: Utah Snowflake Obsidian is a unique variety of obsidian, a volcanic glass formed from cooled lava with inclusions of the white mineral, Cristobalite. Color: Snowflake Obsidian typically has a black base color with distinctive white or gray snowflake like patterns scattered across its surface. The contrast between the black base and the white or gray patterns is quite striking. Hardness: It has a hardness of around 5 to 5. 5 on the Mohs