Not only are they rare but they are also known to have a spectacular brilliance and are the hardest substance found on earth.
Most expensive precious gemstones.
And also the most advertised and romanticized.
Alexandrite 70 000 per carat.
The oppenheimer blue a vivid blue diamond weighing 14 6 carats sold at auction for 57 5 million.
Out of all other gemstones they are arguably the most popular among people.
The largest loose diamond in the world is the paragon diamond weighing in at 137 82 carats while the pink star diamond is the most expensive gemstone to ever be sold at a whopping 83 million.
March 30 2015 when we think of precious stones diamonds emeralds and rubies jump to mind as the most valuable gemstones in the world.
Check out these ten incredibly rare and insanely expensive gems below.
This makes the emerald one of the most valuable gemstones in the world.
However or perhaps surprisingly there are so many gemstones that are even more rare and in turn even more valuable.
That s over 4 million per carat.