9iddb.ts.is ((COLEMANITE)), $5 MINIMUM BID, Boron Open Bit Mine, Boron Kern County, California, 7 x 3.5 x 3.5 cm, Cabinet, | |
Sharp lustrous colorless sharp edged tooth like crystals of Colemanite from Boron. Bottom sawn flat and smoothed for display. ex Jim Minette collection. |