Smithsonian Magazine on MSN3d
See the Stunning Sapphire Ring Belonging to a Medieval Bishop That Just Sold at AuctionSeveral years ago, metal detectorist Mark Sell was searching for treasure at a field in Norfolk, England. He had scanned this ...
Interesting Engineering on MSN22d
Super sapphire: Next-gen moth eye-inspired material defies dust, scratches, and glareA new study shows that sapphire, the second most durable gemstone after diamond, could be the key to developing the best anti ...
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