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World's largest cut diamond carved from mysterious stone harder than regular gems
A mysterious black diamond stumped experts for years until one Belgian cutter invented a new machine to shape the 612-carat ...
TAIZHOU, ZHEJIANG, CHINA, January 20, 2026 /EINPresswire.com/ -- The global stone processing industry is undergoing a ...
A new study reveals that Egyptians were using a mechanically sophisticated drilling tool far earlier than previously suggested. Researchers at Newcastle University, and the Academy of Fine Arts, ...
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