John Sinkankas (b.15-5-1915 – d.17-5-2002) was a famed American mineralogist and gem cutter, and prolific writer on the subject.
Trev.
John Sinkankas - Bookplate
John Sinkankas - Bookplate
A bookplate of John Sinkankas:
John Sinkankas (b.15-5-1915 – d.17-5-2002) was a famed American mineralogist and gem cutter, and prolific writer on the subject.
Trev.
John Sinkankas (b.15-5-1915 – d.17-5-2002) was a famed American mineralogist and gem cutter, and prolific writer on the subject.
Trev.
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