Diamonds are best a friend of a girl is a popular saying. Likewise, there are many other precious gemstones which are available in abundance under the earth. The process of digging and mining are very difficult and can be done only by specific persons. Gold, silver, platinum and diamonds are commonly used in making of jewellery. But do you actually know that there are plenty of other gemstones under the earth’s crust which we have never heard about?
They are very expensive as they are scarce in quantities under the earth. We will further discuss the world’s costliest gemstones which are used by only classy and the rich people in the globe as the price of these gemstones is very high. We have listed the top 10 Most Expensive Gemstones In The World.
10. Poudretteite – $3000 per carat
Starting at number 10, it is poudretteite which is one of the most expensive and unique gemstones. This gemstone was invented in the year 1960 in Mont St. Hilaire in Canada. This stone got its name from one of the families named Poudretteite who was in charge of a quarry in this area.
This stone has a pink colour and it has a hexagonal shape. Poudretteite can be also of various other colours and it can be used in making of earrings and finger rings which are very costly.
9. Benitoite – $4000 per carat
A gemstone which is 8 times more expensive than gold, Benitoite is a blue coloured silicate mineral. It emits light under short wave ultraviolet light. These minerals occurred first time near San Benito River in California. It has 5 pointed crystal form.
Benitoite is one of the rarest minerals found in very few countries of the world such as Japan and Arkansas. It can change its colour from blue to white in the light.
8. Musgravite – $6000 per carat
Musgravite is a type of oxide mineral which is found mostly in Southern parts of Australia. It belongs from taaffeite family of minerals. The hardness of Musgravite is between 8- 8.5 on the Moths scale. It is normally green and greyish green in colour.
The combination of magnesium, zinc and iron forms the mineral known as Musgravite. It is a widely used mineral in making various types of jewellery and ornaments.
7. Red Beryl – $10,000 per carat
The mixture of beryllium and aluminium cyclosilicate forms the mineral which is called Red Beryl. These gemstones have originally hexagonal shape. Red Beryl is one of the minerals which are found in few places in the world.
This gemstone is available in many colours such as green, yellow, blue, white and red. The highest quantities of red beryl are found in Wah Wah Mountains of Thomas range in Utah.
6. Alexandrite – $12,000 per carat
Alexandrite changes its colours on the basis of ambient lighting. It generally changes its colour from green to red. It appears in green colour during the day. These stones are found in the Ural Mountains in Russia.
There are also many other kinds of Alexandrite minerals which are of different colours like yellow, pink or raspberry red. The other locations where this gemstone is found are India, Brazil, Tanzania and Sri Lanka.
5. Diamond – $15,000 per carat
The allotrope of carbon results in a structure which is known as a diamond lattice. It has the highest hardness of all minerals. The diamonds are formed at a very high temperature and pressure at depths of about 190 kilometres.
They come near to the surface of the Earth as a result of volcanic eruptions by magma. The rough diamonds are converted into the form of gems with a process known as cutting. The various kinds of diamonds are round, pear, oval and hearts.
4. Serendibite – $18,000 per carat
Serendibite is the mineral which was invented for the first time in Sri Lanka in the year 1902 by Dunil Palitha Gunasekera. This gemstone is available in various colours like yellow, greyish blue, black and many more. The shape of Serendibite is originally triclinic.
The formula of this gemstone is the combination of many minerals like calcium, aluminium, boron and magnesium. It was also later found in the Mogok area of Myanmar.
3. Grandidierite – $20,000 per carat
The name of Grandidierite comes from Alfred Grandidier who was a French explorer of Madagascar. He was an expert in geography and history. The crystals of Grandidierite are bluish-green and greenish-blue in colour and they are long in size.
The hardness of Grandidierite is 7.5 on the Moths scale. The length of this gemstone is 8 cm and they are found in few quantities in Southern Madagascar. The chemical formula of Grandidierite is (Mg, Fe)Al3(BO4)(SiO4)O.
2. Taaffeite – $35,000 per carat
The name of Taaffeite gets its name from the Richard Taaffe who discovered this gemstone for the first time in the year 1945 at a shop in Ireland. It is one of the rarest stones in the whole world and so it is very expensive. This gemstone occurs mostly in carbonate rocks with many other minerals like fluorite, spinel, mica and tourmaline.
Taaffeite is found in large quantities in alluvial deposits in many parts of Sri Lanka and southern Tanzania. It is also a gemstone which is present in limestone sediments and rocks in many parts of China.
1. Red Diamond – $1,000,000 per carat
The most expensive gemstone in the world is Red Diamond. It emits the red colour and has similar properties to that of colourless diamonds. It is a very tough task to find the large-sized red diamonds in the world. They are mostly available in sizes of less than 1 carat.
The largest red diamond is Fancy Red Moussaieff Red Diamond which is 5.11 carat. The clarity of this diamond is just awesome. Red Diamonds are purchased mainly for investment purpose. The mining of red diamonds is mainly done in Argyle Mine in Kimberley in Western Australia.
These gemstones are purchased by only rich people for investment so that they can sell them at a later point of time. They are very rare in earth’s crust and so very costly in price too.
Top 10 Most Expensive Gemstones In The World
1. Red Diamond- $1,000,000 per carat
2. Taaffeite- $35,000 per carat
3. Grandidierite- $20,000 per carat
4. Serendibite- $18,000 per carat
5. Diamond- $15,000 per carat
6. Alexandrite- $12,000 per carat
7. Red Beryl- $10,000 per carat
8. Musgravite- $6000 per carat
9. Benitoite- $4000 per carat
10. Poudretteite- $3000 per carat