The ‘R’ in Ruby Stands for Rare
Ruby is the rarest gemstone in the world, even rarer than diamond. In 30 years of attending large international trade shows, I have seen less than five decent quality rubies over 9 carats. By contrast, I could go to one diamond cutter’s booth that specializes in large diamonds and look at 15 to 20 diamonds from 10 to 50 carats. Although no one is keeping track, experts have estimated that rubies are 100 times rarer than diamonds. When comparing rubies and diamonds over 2 carats, my guess is that rubies are thousands of times rarer.