£1.38 ex VAT
Tourmaline crystal specimens from Madagascar, the mineral pieces are highly crystalline and completely black in colour, opaque and of high grade. Samples are 1″ in size will come supplied in a card tray with an information label.
Tourmaline is crystalline mineral which is also classified as a semi precious stone due to the various colours it can be found in and the often high quality of their crystals. It is a boron silicate compound which usually appears jet black in colour and is known to exhibit pyroelectric properties because it was found to attract hot ashes. These particular mineral specimens come from Madagascar and are clean and free of matrix, how ever, the crystalline nature of the mineral is easily visible, jet black in colour and exhibit the expected vitreous lustre, these specimens are 1″ in size will come supplied in a card tray with an information label.
1.5" x 1.5", 1" Sized Piece, 2" x 2", 3" x 2"
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