Four Treasures Reference Database
Record No. 2116
Helvite and tourmaline accompanied by grunerite in quartz
Journal Article
Gübelin, E.J. (1976) Helvite and tourmaline accompanied by grunerite in quartz. Journal of Gemmology, Vol. 15, No. 3, July, pp. 111–113.
ISBN/ISSN: 221252 | RWHL
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quartz, inclusions, gems