SKU: P_26-4_21
Well-formed crystal of tourmaline. Characterized by the typical black coloration of this variety and an intense, glassy luster on the surfaces of the walls. Distinct striations are visible, as well as well-developed pyramidal faces. Specimen glued to the base, can be detached upon request.
Price: 46 EUR (199 PLN)
Availability: In stock
Location: Erongo Mountains, Erongo Region, Namibia
Size: 53 x 50 x 46 mm
Weight: 200 g
Chemical formula: NaFe₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₄
Crystal system: Trigonal
Mohs hardness: 7.0