Four Treasures Reference Database
Record No. 2533
The history and politics of heat
Journal Article
Hughes, R.W. (2003) The history and politics of heat. The Guide, Vol. 22, Issue 5, Part 1, Sept.–Oct., pp. 1, 4–9, 15.
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corundum, treatments.6, bulk diffusion, surface diffusion, beryllium, flux healing, heat treatment, gems
The author reviews the history of ruby and sapphire heat treatment, including some of the contentious issues regarding disclosure of that treatment.