A forgotten gemstone that reigned during the Victorian era comes back into focus
Radiant diamonds, sapphires, and rubies have been among the most coveted gemstones on the planet for nearly a century. But ...
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Why black opal is one of the most expensive gemstones in the world
Compared to common opal, which is usually one color, black opal exhibits many different colors contrasted by a dark body tone. Frederick: It's simply the most stunning gemstone on the planet.