9ehdbg ((TINCALCONITE after BORAX)), $10 MINIMUM BID, Boron, Kern County, California, 10 x 6 x 4 cm, Cabinet, | |
Two large Borax crystals which are now Tincalconite. The crystals have been coated to preserve them. The tip of one has a large chip exposing the internal Tincalconite. |