It is also considered among the rarest of all gemstones.
Most popular precious stones.
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.
Her 4 carat emerald ring includes an unusual setting that is one of a kind.
The hand forged gold ring came from french jeweler robert mazio and the square cut emerald is adorned with two smaller diamonds on each side of the 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.
Academy award winner halle berry sports one of the most standout engagement rings and one of the most costly.
Almost all the world s supply of black opal is mined in lightning ridge in new south wales australia.