- Bixbyite on Topaz
- Miniature, 3.6 x 1.9 x 1.3 cm
- Thomas Range, Juab Co., Utah, USA
- Ex. Harold Urish
A gray rhyolite matrix is the natural pedestal here for a gemmy, cognac-colored topaz crystal measuring 2.85 cm in length, upon which is aesthetically perched a splendent, black, 3 mm cube of the rare species bixbyite.