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metamorphic
This specimen is from Australia
Black Tourmaline is a complex aluminum borosilicate with a hexagonal crystal system with an opaque black color
The titanium coating on the quartz is said to increase the stone's energy and amplify the healing properties of the quartz
Insect inclusions in Amber is very rare
Poldervaartite - South Africa 8" x 5" x 2" Gauges metamorphicPoldervaartite is a rare mineral that was first discovered in the Wessels Mine in the Kalahari Manganese Field of South Africa in 1987. It is named after the Dutch petrologist Dr. Pieter Poldervaart. Poldervaartite is a member of the pyroxenoid group of minerals and has the chemical formula NaCa3(CO3)2Si6O15F. This Poldervaartite specimen is from from the Kalahari Manganese Field No. Cape Providence S. Africa. It measures 8" x 5" x 2" and weighs
US$ 17.96
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US$ 157.49
US$ 127.49
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