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Ships within 48 hours · Estimated delivery Sep 24 - Sep 29
533 / Nm: 1
Shimmering reflections
Number of beads on a row of 8mm: 48 beads
It may contain other minerals or impurities that can create rich patterns
Perles en tourmaline noire, forme carré Acier inoxydable 533 / Nm: 1Black tourmaline beads in square cube shape. Color: Black Size: 4mm Country of origin: Madagascar Gemological information about tourmaline: Density: Between 2. 84 and 3. 40 Hardness: Between 7 and 7. 5 Crystal system: Trigonal Fracture: Subconchoidal to irregular Cleavage: None Polariscope: Anisotropic (restores all 90 except in the optical axis) Refractive index: Ne: 1. 603 to 1. 772 No: 1. 619 to 1. 778 Birefringence: 0. 013 to 0. 033 Chelsea
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