a) Verneuil-grown sapphire S1, with sharp rim-core zoning. b) Sharp... | Download Scientific Diagram
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Schematic illustration of main sapphire growth techniques: (a)... | Download Scientific Diagram
Synthetic sapphire boule produced by the Verneuil process on black background Stock Photo - Alamy
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Verneuil method - Wikipedia
-4182-p.jpg?v=fdff7873-04ba-4197-a5bc-994dfbf9b904 "Synthetic orange Sapphire Verneuil flame-fusion method faceted 2 52 carats")
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