Dims: 2.8 x 1.5 x 0.7" (7.2 x 3.9 x 1.8 cm)
Wt: 1.69 oz. (48.0 g)
Princess Pat Mine, San Bernardino County, California, U.S.A.
Though this small hand specimen appears to be thoroughly unimpressive under normal light, it holds a few secrets. When bathed in shortwave UV light, it shows many small, patches of brightly-glowing white material- this material is Scheelite, and is indistinguishable from the rest of the piece in white light. Patches of a slightly dimmer, green glow represent "hyalite" opal, which is also nearly impossible to distinguish otherwise. A noticeable amount of calcite rests on the piece, but its orange glow is nearly invisible.