Gemstones are minerals that are found in specific locations only. They're composed of a combination of the main chemical elements such as oxygen, phosphorus, and carbon. Without them, there would be no life on earth because they provide the necessary ingredients for all plants and animals. There are many different types of gemstones with different colors and shapes. These characteristics may account for their use in personal adornments and jewelry. Gemstones range in cost from $20 to $10,000 per carat globally depending on their qualities. Today, gemstone beads are found in settings on rings, pendants, watches, bracelets, necklaces and earrings. There are many different qualities that must be considered when selecting a gemstone for an adornment.
Here are the top 10 most expensive gemstones in the world.
Blue Diamond - $3.93 million per carat
This diamond type exhibits all inherent properties of the mineral except for the blue color of the stone. Their color is blue because of the trace amounts of boron that contaminate the structure of the crystalline lattice. Blue diamonds belong to a subcategory of diamonds known as fancy colored diamonds. This is the common name for diamonds that display intense colored crystal beads. Blue diamonds range in grade from flawless to Included, as is the case with white diamonds.
The diamond, named "The Oppenheimer Blue" in honor of its previous owner, sold for a final price of $57.5 million. The Pink Star diamond broke the record and was the most expensive jewel ever sold. The Blue Diamond holds the record for the most valuable per carat of $3.93 million.
Taaffeite - $35,000 per carat
Taaffeite (BeMgAl4O8) is one of the rarest minerals and seriously you’d be lucky if you find it. This is most frequently misidentified as spinel because it looks somewhat similar to it. Richard Taaffe first discovered this gem in 1945 in Dublin, Ireland and he found this gem in a finely cut and polished state. The major difference between taaffeite and spinel is double refraction that is only found in taaffeite. These gems are found in alluvial deposits in Tanzania and Sri Lanka.
Apatite - ₹ 20,000 per carat
It comes in blue-green color and is believed to have healing properties for the human body. Apatite is used to treat the pancreas, bones, and teeth. It can be very beneficial for people with anemia. It is not known commercially as gemstone because it is softer than quartz, but it can be used as jewelry.
The most expensive Apatite gems are worth $1,350 per carat. Blue Apatite stones are more expensive than green Apatite stones because of their rarity and the fact that they're harder to produce. Purple and pink Apatite stones are rarer than blue and green stones. They can be more expensive than aquamarine stones because of the rarity of the gemstone.
Emerald - $305,000 per carat
Emerald is a variety of beryl and is actually a combination of two elements: chromium and beryllium. The exotic green color is appealing but many gems have imperfections. But the ones that are flawless are mostly rare and are expensive. These qualities make it valuable in colors ranging from green to yellow, blue, and even browns, orange, reds or purples. Emerald is often used as an ornamental stone because of its various hues and the beauty of the stone itself. Emerald is found in the Moat country of Sri Lanka, Madagascar, Ethiopia, and Brazil. The most expensive emerald is found in Sri Lanka where it sells for $24,000 per carat.
Tourmaline gemstones are composed of tetragonal crystals that vary in color from green to pink to brown to yellow to orange and even red. The color of an individual tourmaline gemstone depends on the trace elements and impurities it has. Tourmaline is not as hard as other gemstones and will shatter and break easily, which makes it less valuable than other gemstones. Tourmalines can be very popular because of their colors that range from brown to green to pink and red. The most expensive tourmaline costs $1,800 per carat.
Black Opal – $15,000 per carat
Australian black opals are most valuable and this type is one of the most popular in comparison to other opals. The black opal is classified by the dark body and is in demand in terms of value and desire. The most expensive and largest one is ‘Royal One’ which is a 306-carat gemstone that is valued at $3 million.
Black opals contain trace elements of carbon and iron oxide, which cause the unusual darkening of the stone. Because of their dark body tone, the iridescent colors in black opals are much finer than those in lighter opals. Well, only black color does not make it valuable. There are some other factors also that make it precious such as its brightness and pattern.
Alexandrite - $12,000 per carat
Alexandrite (BeAl2O4) is a type of chrysoberyl found in the Ural Mountains, Russia in the 1830s. This incredible mineral changes its color and it appears like emerald in light and ruby red in the dark.
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