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Calcite is naturally a soft stone
This White Banded Agate Skull Carving is a beautifully crafted piece
Possibly some Stilbite and/or heulandite in this specimen
Whether you are focusing on a collection of Madagascar minerals or looking for a centerpiece that highlights the artistic potential of sedimentary and volcanic processes
Natural Larimar Slabs Slices Tumbled Calcite is naturally a softThese Natural Larimar Slabs Slices offer collectors and lapidary artists a magnificent glimpse into one of the rarest copper bearing minerals on Earth. Scientifically classified as a blue variety of pectolite, this unique sodium calcium silicate gets its iconic oceanic coloration from trace amounts of copper replacing calcium within its crystal structure. Because this material is found exclusively within a single mountainous region of the Dominican
