Fluorescent Calcite Specimen with Galena & Sphalerite rose quartz In this instance

In this instance

This beautiful blue rock is lapis lazuli (today often called lapis)

have double terminations that show extra terminations

Size: 90 x 52 x 33 mm

Fluorescent Calcite Specimen with Galena & Sphalerite rose quartz In this instanceThis is a beautifully complicated, natural crystal cluster with high Mn calcite, minor galena & sphalerite. From the famous Trepa Mine complex in the Trepa Valley in Kosovo. 57 x 55 x 26 mm. 82 grams. This piece glows beautiful mangano calcite red orange under long wave ultraviolet light with a wavelength of 365 nanometers. PLEASE NOTE: A 390 nm light or a black light will not make this rock glow. A 365 nm long wave ultraviolet light was used in the