Measurements: 18 x 16 x 15 mm
Description: A green / blue tourmaline crystal with a nice flat termination.
Despite a few small nicks, it is still a lovely specimen.
Weight of Specimen: 9.4 g
Chemical Composition: Na(Li,Al)3Al6(BO3)3Si6O18(OH)4
Hardness on Mohs Scale: 7 - 7.5
Specimen Code: NER 032US $ 150