Today, if someone says “natural pearls or natural rubies” to me, I think most expensive gems in the world, so the prices have completely rebounded, because there are two different markets.
Among the countless gems found in nature, a select few stand out not only for their beauty but also for their astronomical value. Here’s a look at some of the most expensive gemstones in the world.
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A century ago, crude oil was the most valuable substance on the planet, but exploration and innovation have made it far less expensive. Today, it's eclipsed in value by the likes of gold, diamonds, ...