These earrings appear to be made of Snowflake Obsidian. Snowflake Obsidian is a volcanic glass with white or gray inclusions of the mineral cristobalite. These inclusions create the snowflake-like patterns that give the stone its name. (This is my opinion after researching, that there made of snowflake obsidian. Please refer to all pictures for visual detail as they are considered part of the description as well) Rustic carved stone bear earrings. The last pic w dime is only to show the size of earrings. Thanks for looking :-)