Purple Aragonite Specimen from Minglanilla, Spain DX3504 optical calcite that infiltrate the silica-rich solutions

that infiltrate the silica-rich solutions during its formation

in which the ancient resin is slowly transformed into amber over millions of years

5" Ytrium Fluorite Obelisk

The gemstone's appeal lies in its pleochroic nature

Purple Aragonite Specimen from Minglanilla, Spain DX3504 optical calcite that infiltrate the silica-rich solutionsThis Spanish aragonite specimen has a lovely purple color in the center of the crystals and fades abruptly to an opaque white at the ends. It is fluorescent, and phosphorescent, under a long wave UV light (shown in the last photo). Aragonite is a mineral that belongs to the carbonate group, and it's known for its distinct crystal structure and beautiful array of colors. Chemically, it's composed of calcium carbonate (CaCO), the same compound found in