SKU: B_38_0015
A complex cluster of three tourmaline crystals with varied colors and morphology. The main part of the specimen consists of a thick, dark green crystal with a blocky habit. Two lighter prisms are attached to it. Both main crystals feature flat, shiny terminations. Main Features: cluster of three crystals; thick, dark green block; strong color and structural contrast. Condition: Good plus - two of the three crystals (the dark green and the bicolor) are preserved in very good condition with smooth and shiny terminations; the smallest crystal has a clearly broken tip.
Price: 41 EUR (179 PLN)
Availability: In stock
Location: -, Afghanistan
Size: 23 x 18 x 23 mm
Weight: 11.1 g
Chemical formula: (Na,Ca)(Li,Mg,Fe,Mn,Al)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄
Mohs hardness: 7-7.5