Fluorescent Calcite Specimen with Quartz Crystals from Kosovo Yellow fluorite and the red areas have

and the red areas have inclusions of iron / hematite

They formed when silica-saturated groundwater filled the narrow fissures in the basaltic volcanic rocks of the Serra Geral Formation (Lower Cretaceous in age)

Cluster of albite var

Two beautiful blue pentagonite radiating crystal clusters on a bed of tiny stilbite crystals atop matrix mineral

Beautiful yellow color etched triphane / spodumene crystal from Laghman Afghanistan

Fluorescent Calcite Specimen with Quartz Crystals from Kosovo Yellow fluorite and the red areas haveThis is a beautifully complicated, natural crystal cluster with high Mn calcite & quartz. From the famous Trepa Mine complex in the Trepa Valley in Kosovo. 70 x 60 x 55 mm. 162 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 fluorescent