In nature diamonds are rare but not so in the gem world.
Are rubies rare.
Large gem quality rubies can be more valuable than comparably sized diamonds and are certainly rarer in fact smaller blue sapphires 1 3 cts are relatively abundant compared to small gem quality rubies.
Now corundum is a fairly common mineral.
Forget diamonds emeralds and rubies.
They are also exceptionally scarce.
All rubies are rare but those from myanmar formerly burma set the standard for quality and color.
Today s discerning collectors are looking for jewelry that emphasizes rare striking and sometimes almost impossible to find stones.
Ranking a 9 on the mohs scale of hardness diamond is a 10 corundum has been mined extensively for abrasives.