Four Treasures Reference Database
Record No. 1714
The Heat Treatment of Ruby & Sapphire
Book
Themelis, T. (1992) The Heat Treatment of Ruby & Sapphire. No city, Gemlab Inc., 254 pp.
Sinkankas/Born No.: NIS/NIB | RWHL*
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corundum, ruby, sapphire, treatments.6, inclusions.5, Colombia.12, Brazil.12, USA.12, Montana.12, Idaho.12, gems
