#ThinSectionThursday Zoned corundum with purple-blue sapphire rims and ruby-red cores in a matrix of fuchsite and marguerite, with a green tourmaline vein to the right! (PPL, FOV~4mm) From Hokitika, South Island, New Zealand. https://t.co/aXnhO0M93e
— Matthew Tarling (@RocksbyDefault) Jul 15, 2021
via Twitter https://twitter.com/RocksbyDefault
July 15, 2021 at 10:19PM
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