10 Most valuable (and expensive) gemstones in the world
It's a gem
Tanzanite and Sapphire are in similar rich blue hues, but the former has that violet tinge that differs from the latter. The prices of the gemstone is expected to increase significantly in the next few years as it can only be found in the Mount Kilimanjaro in Northern Tanzania.
While not particularly rare, a high-quality black opal is hard to come by. It can only be found in one region in the world—at the Lightning Ridge of New South Wales in Australia. The most valuable stone was the 306-carat 'Royal One' which was valued at over US$3 million.
Previously known as Bixbite, Red Beryl is a bright red gemstone that's derived from the same family as aquamarine, emerald, and morganite. It can only be found in specific areas in Utah, New Mexico, and Northern Mexico.
The gemstone was first discovered in 1967 in the Musgrave mountains of Australia (hence its name), and it's a very rare stone in the taaffeite family. Only eight gem-quality musgravite stones were mined in 38 years. Its colour ranges from greenish-gray to purple.
Alexandrite is a very rare and unique piece for one reason: its colour-changing properties depending on the light. It turns green during the day and red during the night (or under a candle light).
Emerald may be one of the most popular and common gemstones around, but eye-clean emeralds are actually extremely rare. In 2017, the 18.04-carat Rockefeller emerald was sold by the Rockefeller family to Harry Winston for US$5.5 million.
While it's most known for its red hue, ruby's colours actually ranges from pink to dark red. A 25.5-carat Burmese Red ruby called The Sunrise Ruby is the most expensive ruby ever sold, at US$30.42 million.
Pink diamonds make up less than 0.1 per cent of the total diamonds, so it's to no surprise why it's ranked this high on our list. The 59.6-carat 'Pink Star' diamond—which sold for record US$71.2 million—is arguably the most famous.
Jadeite is the rarer, more valuable form of jade, and although it can be found in colours including red, yellow, and black, green, as you all know, is the most common shade. Its three most important qualities are colour, transparency, and texture.
Blue diamond is considered the most valuable among all coloured stones, and the darker the colour, the more expensive it is. The 14.62-carat 'Oppenheimer Blue' diamond was the most expensive jewel ever sold at an auction (for US$57.5 million), before it was surpassed by the 'Pink Star' diamond the year after in 2017.
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