Fluorescent Calcite with Clear Quartz Crystals & Pyrite from Trepca Mine, Kosovo Rainbow iridescent but this one reacts much

but this one reacts much better to short wave UV

Size: 90 x 68 x 64 mm

Size: 63 x 22 x 14 mm

producing material that ranges from bright golden tones to darker earthy bands with exceptional depth and movement

from Afghanistan

Fluorescent Calcite with Clear Quartz Crystals & Pyrite from Trepca Mine, Kosovo Rainbow iridescent but this one reacts muchThis is a beautiful, natural crystal cluster with high Mn calcite, lustrous clear quartz crystals, and minor pyrite. From the famous Trepa Mine complex in the Trepa Valley in Kosovo. Size: 87 x 85 x 60 mm. 258 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 may not make this rock glow. A 365 nm long wave ultraviolet light