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Small specimen with brilliant green atacamite crystals embedded in lighter-colored chrysocolla.It was collected in Las Pintadas, located in the Atacama region of Chile.Its dimensions are 5.6 x 3.8 x 2.2 cm.The weight of this piece is 61 grams.Additional photos and online ordering are available on...

Hyalite opal on matrix, with a slight reaction to UV light.This piece originates from Zacatecas, a region in Mexico.Its dimensions are 3.6 x 2.7 x 1.9 cm.The weight of this specimen is 18 grams.(Measurements without base)Additional photos and online ordering are available on the DGminéraux...

Rare specimen of maryalite, from the scapolite group, with three joined crystals showing a single termination (both ends of the piece are broken).This specimen comes from the Rubeho Mountains, Kilosa, Morogoro, Tanzania.Its dimensions are 2.8 x 1.4 x 0.7 cm.The weight of this piece is 5.3...