From Cerro de Mercado, Durango, Mexico Gem transparent yellow fluorapatite crystals embedded on both sides of its gray quartz chalcedony. The fluor...

from Minas Gerais, Brazil. Several green beryl crystals on tan colored feldspar matrix. The crystal are greenish-brown color and has the typical co...

From Cerro de Mercado, Durango, Mexico   Gem transparent yellow fluorapatite crystals embedded on both sides of its gray quartz chalcedony. The flu...