DH Web Desk
Red Diamond
Red diamonds lead the list as the most expensive diamonds in the world, valued at a staggering $1 million per carat.
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Taaffeite
Found mostly in Sri Lanka and Tanzania, taaffeite is one of the rarest gemstones, with only a handful of gem-quality specimens available. It is priced at a remarkable $35,000 per carat and is recognised for its double refraction, which spinel does not possess, as well as its enchanting lavender to pinkish-purple colour, making it a sought-after treasure for collectors.
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Grandidierite
Discovered in Madagascar in 1902, grandidierite is a highly rare gemstone known for its translucent bluish-green hue. Formed in boron-rich, aluminum-heavy rocks, this unique borosilicate mineral commands a price of $20,000 per carat.
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Serendibite
Discovered in Sri Lanka in 1902, serendibite is an exceptionally rare gemstone with a vibrant colour that varies from blue-green to black. Its remarkable chemical structure, containing calcium, magnesium, and boron, adds to its allure, with a price of up to $18,000 per carat.
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Diamond
Diamonds, a timeless symbol of love and luxury, are made of carbon atoms arranged in a structured lattice, giving them their hardness and shine. While colourless diamonds are famous, fancy coloured diamonds can be even more expensive, with a value of up to $15,000 per carat.
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