SKU: B_38_0003
A bicolor crystal of tourmaline from Afghanistan, set on a light, contrasting matrix. The specimen features distinct color zoning: the base of the crystal is dark, almost black, which then sharply transitions to a bright, translucent green in the upper part. The side walls of the prism are covered with deep, sharp striations, and the flat termination exhibits a natural, slightly frosted texture. Main Features: color zoning; flat, naturally formed termination; presence of quartz; presence of a smaller side tourmaline. Condition: Very good - the main crystal is preserved in good condition with a natural, mechanically unaltered termination.
Price: 25 EUR (109 PLN)
Availability: In stock
Location: -, Afghanistan
Size: 34 x 20 x 24 mm
Weight: 13.5 g
Chemical formula: (Na,Ca)(Li,Mg,Fe,Mn,Al)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄
Mohs hardness: 7-7.5