Which is the cheapest gemstone in the world?

What is the least rarest gemstone?

Painite : Not just the rarest gemstone, but also the rarest mineral on earth, Painite holds the Guinness World Record for it. After its discovery in the year 1951, there existed only 2 specimens of Painite for the next many decades. By the year 2004, there were less than 2 dozens known gemstones.

What’s the worst gem?

The Mohs Scale of Hardness

10 Diamond
9 Corundum (rubies and sapphires)
8 Topaz
7 Quartz [Example: It scratches window glass]
6 Feldspar [Example: A steel file will scratch it]

Which birthstone is the most expensive?

Diamond (April)

The priciest and most prized of all the birthstones, those born in April have the double-edged sword of having diamonds assigned to their birth month.

What are the 7 gems?

Strictly speaking the precious stones are only seven in number—the diamond, the pearl, the ruby, the sapphire, the emerald, the oriental catseye, and the alexandrite; but to these are often added the so-called semi-precious stones—such as the amethyst, the topaz, the tourmaline, the aquamarine, the chrysoprase, the …

What is rare gem?

adj. 1 not widely known; not frequently used or experienced; uncommon or unusual.

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