The traditional list of gemstones that are considered precious stones are: Diamond. Ruby. Sapphire. Emerald.

What is the most precious stone on Earth?

Sapphire is the most precious blue gemstone. It is a most desirable gem due to its color, hardness, durability, and luster. Value of this gemstone depends on its size, color and transparency. Top-quality sapphires are extremely rare in all the gemstone mines of the world.

Which Precious Stone Are You?

Are you as tough as diamond or as passionate as ruby?
1 Million Tests offers you to find out which of rare stones fits your precious …

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