Learn about some of these Most Rare gemstones that is more rarer than diamond and how to identify one.
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According to Wikipedia, A gemstone (also called a fine gem, jewel, precious stone, or semiprecious stone) is a piece of mineral crystal which, in cut and polished form, is used to make jewelry or other adornments.
However, certain rocks (such as lapis lazuli and opal) and occasionally organic materials that are not minerals (such as amber, jet, and pearl) are also used for jewelry and are therefore often considered to be gemstones as well.
Most gemstones are hard, but some soft minerals are used in jewelry because of their luster or other physical properties that have aesthetic value.
Rarity and notoriety are other characteristics that lend value to gemstones.
Apart from jewelry, from earliest antiquity engraved gems and hardstone carvings, such as cups, were major luxury art forms.
A gem maker is called a lapidarist or gemcutter; a diamond cutter is called a diamantaire.
13+ Rare Gemstones In The World
• Benitoite Gemstone
Benitoite is a rare blue valuable gemstone barium titanium cyclosilicate, found in hydrothermally altered serpentinite.
It forms in low temperature, high pressure environments typical of subduction zones at convergent plate boundaries.
Benitoite fluoresces under short wave ultraviolet light, appearing bright blue to bluish white in color.
The more rarely seen clear to white benitoite crystals fluoresce red under long-wave UV light.
Benitoite occurs in a number of isolated locations globally, but gemstone quality material has only been found in California at the Benito Gem Mine where it was first discovered.
It has been correctly identified in Montana, Arkansas, Japan, and Australia although they formed under slightly different conditions and only grow large enough to be considered an accessory mineral. In 1985 benitoite was named as the official state gem of California.
• Alexandrite Gemstones
Alexandrite is a very rare, transparent gemstone that appears green-blue in daylight but changes to red-violent under incandescent light and It is one variety of the mineral chrysobery.
• Tanzanite Gemstones
Tanzanite is the blue and violet variety of the mineral zoisite (a calcium aluminium hydroxyl sorosilicate), caused by small amounts of vanadium.
Tanzanite belongs to the epidote mineral group. Tanzanite is only found in Tanzania, in a very small mining area (approximately 7 km (4.3 mi) long and 2 km (1.2 mi) wide) near the Mererani Hills.
Tanzanite is noted for its remarkably strong trichroism, appearing alternately blue, violet and burgundy depending on crystal orientation.
Tanzanite can also appear differently when viewed under different lighting conditions.
The blues appear more evident when subjected to fluorescent light and the violet hues can be seen readily when viewed under incandescent illumination.
In its rough state tanzanite is colored a reddish brown to clear, and it requires heat treatment to remove the brownish “veil” and bring out the blue violet of the stone.
• Jadeite Gemstones
Another Rare gemstones is Jadeite which is a pyroxene mineral with composition NaAlSi2O6.
It is hard (Mohs hardness of about 6.5 to 7.0), very tough, and dense, with a specific gravity of about 3.4.
It is found in a wide range of colors, but is most often found in shades of green or white.
Jadeite is formed only in subduction zones on continental margins, where rock undergoes metamorphism at high pressure but relatively low temperature.
• Taaffeite Gemstone
Taaffeite is a mineral rare gemstone, named after its discoverer Richard Taaffe (1898–1967) who found the first sample, a cut and polished gem, in October 1945 in a jeweler’s shop in Dublin, Ireland.
As such, it is the only gemstone to have been initially identified from a faceted stone.
Most pieces of the gem, prior to Taaffe, had been misidentified as spinel. For many years afterwards, it was known only in a few samples, and it is still one of the rarest gemstone minerals in the world.
• Painite Gemstones
Painite is a very rare gemstone borate mineral. It was first found in Myanmar by British mineralogist and gem dealer Arthur C.D.
Pain who misidentified it as ruby, until it was discovered as a new gemstone in the 1950s.
When it was confirmed as a new mineral species, the mineral was named after him.
Due to its rarity, painite can cost in the range of between US$50,000 to $60,000 per carat.
• Grandidierite Gemstones
Grandidierite is a rare mineral that was first discovered in 1902 in southern Madagascar. The mineral was named in honor of French explorer Alfred Grandidier (1836–1912) who studied the natural history of Madagascar.
• Musgravite Gemstones
Musgravite or magnesiotaaffeite-6N’3S is a rare oxide mineral used as a gemstone.
Its type locality is the Ernabella Mission, Musgrave Ranges, South Australia, for which it was named following its discovery in 1967.
It is a member of the taaffeite family of minerals, and its chemical formula is Be(Mg, Fe, Zn)2Al6O12.
Its hardness is 8 to 8.5 on the Mohs scale. Due to its rarity, the mineral can sell for roughly USD$35,000 per carat.
• Poudretteite Gemstones
Poudretteite is an extremely rare mineral and gemstone that was first discovered as minute crystals in Mont St. Hilaire, Quebec, Canada, during the 1960s.
The mineral was named for the Poudrette family because they operated a quarry in the Mont St. Hilaire area where poudretteite was originally found, and the quarry is currently owned by the United Kingdom based Salmon Mining Industries Inc. Poudretteite has a barely detectable radioactivity.
• Sapphire Gemstone
Sapphire is a precious rare gemstone, a variety of the mineral corundum, consisting of aluminium oxide (α-Al2O3) with trace amounts of elements such as iron, titanium, chromium, vanadium, or magnesium.
The name sapphire is derived from the Latin “saphirus” and the Greek “sapheiros”, both of which mean blue.
It is typically blue, but natural “fancy” sapphires also occur in yellow, purple, orange, and green colors; “parti sapphires” show two or more colors.
• Jeremejevite Gemstone
Jeremejevite is an aluminium borate mineral with variable fluoride and hydroxide ions. Its chemical formula is Al6B5O15(F,OH)3.
It is considered as one of the rarest, thus one of the most expensive stones.
For nearly a century, it was considered as one of the rarest gemstones in the world.
• Serendibite Gemstones
Serendibite is an extremely rare gemstone silicate mineral that was first discovered in 1902 in Sri Lanka by Dunil Palitha Gunasekera and named after Serendib, the old Arabic name for Sri Lanka.
Above are few list of most rarest gemstones in the world which cost thousands of dollars per cart.
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