Blue / Green Tourmaline - NKB 002

Gem quality blue / green tourmaline crystal on quartz matrix

 Measurements:  32 x 27 x 20 mm

Description:  Gem quality blue / green tourmaline (elbaite) crystal on quartz matrix. The crystal is 20 x 2½ mm, is flawed and not terminated.

Chemical Composition:  Na(Li,Al)3Al6(BO3)3Si6O18(OH)4  (tourmaline)                                             SiO2  (quartz)

Hardness on Mohs Scale:  (tourmaline)  7 - 7.5
                                      (quartz)  7

Location:  Karibib, Erongo Region, Namibia.

Specimen Code:  NKB 002

US $ 50




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