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> Corundum [synthetics]
Manufactured mainly using the Verneuil process, also called flame fusion, developed by the French chemist Auguste Verneuil.
Corundum — specimen S-004
, photo © NMNHS
Material from ‘Repository’
— 6.29 ct.
Gemmology — gemstones
National Museum of Natural History, Sofia
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None of the specimens illustrated in this site is on display in the permanent exhibition of the National Museum of Natural History, Sofia.