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February 24, 2020
February 24, 2020

10 of the World’s Rarest Gemstones

There are roughly 200 varieties of natural gemstone known in the world today. Alongside the world’s precious gems (diamond, ruby, sapphire, and emerald) are numerous semi-precious […]
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March 1, 2019
March 1, 2019

Opal: A brief introduction

Geologically speaking, precious opal is a rare find. With so few localities producing gem-quality opal, scientists have had some trouble understanding exactly how this material develops. […]
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