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However, most fine specimens are carefully preserved by mineral collectors and rarely faceted. The dazzling gemstone Benitoite flawlessly completes the list of the world's rarest gemstones. Found only ...

Narrator: High-quality black opal can cost over $10,000 per carat, making it one of the world's most expensive gemstones ... is one of the most enchanting stones in the world, sought after ...

In a powder room, brass-inlaid, lilac-veined Turkish marble takes up every inch of the vanity, which includes a sink carved ...