A few stones have been found in sri lanka namibia and malawi but they were not of jewelry quality. The stone is bluish green in color with the more transparent hue looking almost like the tropical ocean. Interestingly tanzanite is only found in mount kilimanjaro s foothills and is currently valued at about 1 500 per carat. Hilaire in quebec canada in 1960 s. Benitoite batisi3o9 is a bright blue gemstone made up of barium titanium and silica.
Benitoite is formed during the late stage cooling of a hydrothermally altered serpentinite. It was named in honor of the poudrette family who are the operators of the quarry where the gemstone was discovered. Red beryl also known as bixbite or red emerald is so rare it is estimated by the utah geological survey that a single such gem is uncovered for every 150 000 gem quality diamonds. The first sizable gem quality specimen was discovered in 1993. It has an hexagonal shape and a very pale pink color.
Its price is a whopping 3 000 per carat making it one of the most expensive gemstone on earth. The musgravite is one of the rarest gemstones in the world as only a few are in existence right now. Musgravite was discovered in 1967 and is arguably the rarest gemstone in the world. Discovered in 1902 in the southern region of madagascar grandidierite is an extremely rare gemstone. As far as gem quality stones there are about ten specimens known and documented.
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Because of the remote and singular location there is serious concern the world s supply of tanzanite may be depleted in the next 20 years. Said to be about 1 000 times rarer than diamonds tanzanite is a deep blue gemstone named after tanzania where it was discovered for the first time in 1967. It was first discovered in musgrave ranges australia and later found in madagascar and greenland. Different opal gemstones are of different colours because of the different conditions in which each one is formed. Out of all the different hues in which the opal gemstone is found the black opal is the rarest and commands the most price.Poudretteite is an extremely rare gemstone. And with great rarity comes a greater price at 600 1 000 per carat. Poudretteite is an extremely rare gemstone. Because of the remote and singular location there is serious concern the world s supply of tanzanite may be depleted in the next 20 years. Its price is a whopping 3 000 per carat making it one of the most expensive gemstone on earth.
And with great rarity comes a greater price at 600 1 000 per carat. Benitoite is formed during the late stage cooling of a hydrothermally altered serpentinite. A few stones have been found in sri lanka namibia and malawi but they were not of jewelry quality.
