“A few dozen crystals and shards of the rare zeolite bikitaite in a Riker mount. Individual crystals reach 1.8 cm. Specimen dimensions (size of the Riker mount): 14.1 x 10.4 x 2.2 cm (5.6 x 4.1 x 0.9 inches)”

“A few dozen crystals and shards of the rare zeolite bikitaite in a Riker mount. Individual crystals reach 1.8 cm. Close-up with field of view about 5 cm wide. Specimen dimensions (size of the Riker mount): 14.1 x 10.4 x 2.2 cm (5.6 x 4.1 x 0.9 inches)”