CAL104 Fluorescent Calcite 25 and Tigereye

and Tigereye

Inside the quartz is blue

It was among the last of the non-avian dinosaurs to exist prior to the Cretaceous-Paleogene extinction event

This polished specimen features blue-gray

but the original Wildhorse Jasper comes from eastern Oregon

CAL104 Fluorescent Calcite 25 and TigereyeThis calcite rhomb has naturally straight sides created from its distinct cleavage properties. The rhombohedral formation produces double refraction, which is why this material is also known as Optical Calcite. When you look at objects through the calcite, it splits the rays of light and displays two images of the same object. This piece is a gemmy, translucent peachy pink, which is a result of the presence of manganese within its chemical makeup.