Dims: 0.9 x 0.5 x 0.5" (4.8 x 1.3 x 1.3 cm)
Wt: 4.2 g
Gem Mine, San Benito County, California, U.S.A.
Four trigonal tabular Benitoite crystals rest on a natrolite crust that partly covers the gray host rock of this thumbnail specimen. These crystals range in diameter from less than 2 mm to 0.4" (1.0 cm), and are generally in excellent condition; only one shows any damage, and it is still complete. All have excellent form, with well-defined edges clean faces that possess a surprisingly dull, pearly luster. The largest crystal has a slight irregularity in its form, but this does not affect its overall shape. Their color ranges from pale to deep blue, and all are at least translucent and contain areas of noticeable transparence amid their slight internal fracturing.