
Ethiopian (Welo) Opal
Welo Opal, Wollo Opal
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Ethiopian (Welo) opal is a locality name for opal from Wollo, Ethiopia, not a separate species. Much of this material is hydrophane and can take up water. Smoke, sugar, and dye surface modifications occur in this market and must be disclosed. Collectors may keep it for study and display. It is not medical care.
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