Before mariah carey s engagement ring it held the title of the most expensive celebrity engagement ring.
Most expensive stone ring.
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.
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.
Mohs hardness measures a material s resistance to scratching.
Grace kelly s engagement ring 4 06 million.
The 8 carat pear shaped engagement ring cost cardi s fiance a whopping 500 000.
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.
That s a good indicator that a stone is suitable for the rigors of daily ring wear.
Coming in at number 4 on the world s most expensive engagement rings is the classic one that prince rainier iii of monaco gave grace kelly.
Rounding up our top twelve priciest rings in the world is the krupp diamond ring valued at 8 8 million.
Most of the gems on this list have a mohs hardness equal to or greater than 7.
The ring has a huge diamond centerpiece a 33 carat asscher cut krupp diamond and it is set on a ring with a platinum band.
Here is the top 10 list of most expensive gemstones in the world.