Snowflake obsidian
Commercial name for a natural black volcanic glass with white “snowflake” crystal patterns of the mineral cristobalite, created by partial crystallization (devitrification) of the glass.…
Tag: snowflake obsidian
Live session #14 Volcanic Glass
Recorded live session in which I discuss and show a variety of different forms of volcanic glass. Volcanic glass occurs in nature in various forms,…
