jinis
mercon obsidian, mahoni, Sheen obsidian, Snowflake obsidian lan Beludru merak obsidian
gandheng tuff, tuff rhyolitic, basaltic tuff, trachyte tuff, tuff andesitic lan ignimbrite.
fitur
pamblokiran negativity, mbantu kanggo ngreksa marang depresi
tansah ditemokake minangka pipo vulkanik liwat lemah ndhuwur Continental jero