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They were just farmers digging by hand, until they discovered the world’s rarest opal
At almost 10,000 feet above sea level, villagers in northern Ethiopia have uncovered a seam of pure black opal buried within hand-dug tunnels. The site, hidden in Wollo Province’s rugged terrain, is ...
NEW YORK, April 02, 2022 (GLOBE NEWSWIRE) -- Opal is used as a gemstone in jewelry, as it gives beautiful iridescent sparkles. The most beautiful species are mined in Hungary. Because it is found in a ...
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