Tourmaline Quartz comes from China attractive quality.

Tourmaline Quartz comes from China attractive quality.

Ametrine from Bolivia in triple-A between 40 and 70 grams.

Ametrine from Bolivia in triple-A between 40 and 70 grams.

Sugilite quality C from South Africa

Sugilite is the most expensive stone in our normal range. For example, we recently bought Suglite in triple A for € 3000, - per kilo. But painfully also a small lot of quality C bought that was awarded to us for a bargain price.
Availability: In stock
SKU
2244
  • Buy 10 for €65.00 each and save 10%
Sugilite quality C from South Africa is available to buy in increments of 3

The mineral sugilite is a potassium-sodium-iron-manganese-aluminum lithium silicate having the chemical formula KNa2 (Fe2 +, Mn2 +, Al) 2 Li3 Si12 O30. The mineral belongs to the cyclosilicates. The translucent to translucent brown, pink or purple sugilite has a glass gloss, a white stripe color and the cleavage is unclear according to the crystal plane. The average density is 2.74 and the hardness is 6 to 6.5. The crystal system is hexagonal and the radioactivity of the mineral is hardly measurable. The gamma ray value according to the American Petroleum Institute is 54.07. The mineral sugilite is named after the Japanese petrologist Ken-ichi Sugi (1901 - 1948). Sugilite occurs mainly in metamorphic manganese-containing rocks and in alkaline solidification rocks. The type location is located on the Iwagi island in the Ehime Prefecture, Japan.

 

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