Mojave Basanite 524  :  A beveled bar cut of jet Black probably Silicified Basenite.  I found boulders of this stuff and brought a piece home to test on the wheel!  Jet Black and mirror polish, wow,
Mojave Basanite 524 : A beveled bar cut of jet Black probably Silicified Basenite. I found boulders of this stuff and brought a piece home to test on the wheel! Jet Black and mirror polish, wow,
14mm x 41mm