Are Rubies Rare
They are also exceptionally scarce.
Are rubies rare. Forget diamonds emeralds and rubies. While rubies from thailand contain relatively high iron content which can result in overly dark reds with brownish or purplish overtones the geological conditions in myanmar generally produce rubies with very little trace iron. All rubies are rare but those from myanmar formerly burma set the standard for quality and color. Now corundum is a fairly common mineral.
Rubies and sapphires are different colored varieties of the mineral corundum. Ranking a 9 on the mohs scale of hardness diamond is a 10 corundum has been mined extensively for abrasives. In nature diamonds are rare but not so in the gem world.