Purple Aragonite Specimen from Minglanilla, Spain DX3504 optical calcite Though the pearly greens may

Though the pearly greens may make it seem easy to spot in a crowd

The gemstone's appeal lies in its pleochroic nature

that infiltrate the silica-rich solutions during its formation

5" Ytrium Fluorite Obelisk

Purple Aragonite Specimen from Minglanilla, Spain DX3504 optical calcite Though the pearly greens mayThis 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