These 10 Insanely Rare Gems Are the Real Treasure Hunters' Dream

1. Alexandrite

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Mostly recognised for their amazing color-changing qualities, Alexandrite is one of the most interesting and valuable gemstones available worldwide. This unusual gemstone is a range of chrysoberyl and shows a phenomena called pleochroism, whereby it looks green in daylight and turns red under incandescent light. Alexandrite is quite fascinating and sought after by gem collectors and enthusiasts since it allows colours to vary depending on the light source. Alexandrite first came to light in the Ural Mountains of Russia in the early 19th century Named in Tsar Alexander II's honour, its arresting colour change was supposed to reflect the national colours of imperial Russia. The historical link accentuates the beauty and mystery of the gemstone. Another element influencing Alexandrite's great value is its scarcity. Russia's initial reserves have long been depleted, hence high-quality alexandrite is becoming more and more rare. Though smaller amounts are being mined in East Africa, Brazil, and Sri Lanka, these sources are not as plentiful as the original Russian mines. From a gemological standpoint, chromium ions found in the crystal structure accounts for the colour shift in alexandrite. This component causes the gemstone to absorb light differently depending on the wavelength, hence producing the striking change in colour. The most sought alexandrites have a stunning green to red colour transition; stones shown a pure green in daylight and a rich, purplish-red under incandescent light are the most costly. Apart from its looks, alexandrite is renowned for its durability. On the Mohs scale of hardness, it comes out as 8.5, which qualifies for rings, earrings, and pendants among other kinds of jewellery. Alexandrite is a favourite among jewellers and designers who want to produce objects that are both beautiful and long since its toughness and unusual visual qualities appeal. Apart from its beauty and rarity, collectors and gem aficionados appreciate alexandrite for its legendary background and the mystery connected with its color-changing capacity. Having an alexandrite is sometimes considered as having a bit of nature's magic, a gemstone that, depending on the light, may disclose several sides of its personality. This magical ability guarantees that alexandrite stays among the most sought-after and appreciated gemstones available worldwide.