Gem News: Feldspar with ruby inclusions
Journal Article
Koivula, J.I., Kammerling, R.C. and Fritsch, E. (1994) Gem News: Feldspar with ruby inclusions. Gems & Gemology, Vol. 30, No. 4, Fall, p. 274.
ISBN/ISSN: 0016626X | Sinkankas/Born No.: NIS / NIB | RWHL
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