what is the worlds rarest gemstone?

Answer 1

Rarest Gemstones.

This comes into the category of "Collector Gems." Now rarity can depend on size and quality of said stones, but here are some of the rarest off-hand:

1) Brazilian Paraiba
2) Russian Alexandrite
3) Bixbite ( Red Beryl )
4) Benitoite

Answer 2

The queen of gems, deep red ruby is the rarest and most valuable of gemstones. The earliest record for the mining of Rubies goes back to more than 2,500 years ago in Sri Lanka.

Historically, many believe that ruby possess mystical powers. The ancient Burmese believed that when you insert ruby beneath the skin, the stone generates a mystical force, which protects the wearer from accidents and attacks. In the ancient world, many believed Rubies to contain prophetic powers, enabling wearers to predict their future based on the color changes of their gemstones.

Rubies have been so loved by royalty, they have always included them in their insignias and famous jewelry.

Answer 3

It's not diamonds.

Painite is considered the world's rarest gemstone.

http://www.mindat.org/mesg-15-26554.html

http://www.curiousnotions.com/home/gemstones.html

Answer 4

Diamond

Answer 5

I heard emeralds and rubies are the rarest but don't have any factual info on it..sorry.