Before mariah carey s engagement ring it held the title of the most expensive celebrity engagement ring.
Most expensive stone ring.
Mohs hardness measures a material s resistance to scratching.
Tanzanite 1 200 per carat black opal 9 500 per carat red beryl 10 000 per carat musgravite 35 000 per carat alexandrite 70 000 per carat emerald 305 000 per carat ruby 1 18 million per carat pink diamond 1 19 million per carat.
The first most expensive engagement ring on the list is owned by american rapper cardi b.
What gemstone is most valuable.
Here is the top 10 list of most expensive gemstones in the world.
Before you buy an expensive engagement ring stone.
Grace kelly s engagement ring 4 06 million.
If you think dropping 500 000 of an engagement ring is a big deal then keep reading as you they continue to get even more expensive.
That s a good indicator that a stone is suitable for the rigors of daily ring wear.
Above we featured the diamond as one of the most expensive gemstones and coming in at number 1 with a price tag of over 1 million per carat is the red diamond.
The 8 carat pear shaped engagement ring cost cardi s fiance a whopping 500 000.
Most of the gems on this list have a mohs hardness equal to or greater than 7.