Image:Verneuil torch sketch.png
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[edit] Summary
An early sketch of a Verneuil torch, used by Verneuil for the production of rubies using the Verneuil process. Taken from "Synthesis of Precious Stones" by I.H. Levin, first published in May 24, 1912. Available online at [1].
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| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 23:19, 16 February 2006 | 1,368×1,959 (141 KB) | Aramgutang | (An early sketch of a Verneuil torch, used by Verneuil for the production of rubies using the Verneuil process. Taken from "Synthesis of Precious Stones" by I.H. Levin, first published in May 24, 1912. Available online at ) |
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