Diamond octahedronThis spectacular single crystal was recently mined at the Rio Tinto Company’
Diamond octahedronThis spectacular single crystal was recently mined at the Rio Tinto Company’s Argyle Diamond mine in Western Australia. That mine is most famous for producing many of the large pink diamonds available on the gemstone market in recent decades (see:https://tmblr.co/Zyv2Js2hbwbUY). This one, holding an excellently formed octahedral shape, was measured at over 28 carats. Look closely and you can maybe even see a few etching marks reflecting the internal crystal structure appearing on the faces. The specimen will be shipped to market in Europe before it is likely cut into whatever its final state will be.The Rio Tinto mine is slated for closure in 2020, so this find may wind up being one of, if not the, last large stone pulled from this mine.-JBBImage credit: Rio Tinto miningReferences:https://ab.co/2W4eFvQhttps://www.naturallycolored.com/diamond-education/argyle-diamond-mine -- source link
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