Sapphire Stone

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Articles about Sapphire Stone

3 published items.

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Sri Lankan authorities on December 12 displayed the world's largest natural blue sapphire, weighing 310kg.

December 14, 2021

Oceanography

Last year, explorers on a South African coast discovered a sea creature capable of blinking invisible invisible in a split second, they were called

December 17, 2018

Oceanography

The skin of this creature may blink in color, from blue to invisible in an instant.

December 17, 2018