Basic introduction of the world's largest diamond
? Cullinan? (Cullinan).190565438+1October 2 1 was invented in Primir mine in South Africa. Pure and transparent, moonlight tone, weighing 3 106 carats. Later, it was processed into 9 big diamonds and 96 small diamonds. What's the name of the biggest one? African star I? The shape of a water dot is embedded in the scepter of the king of England. The second largest is called. Africa Star 2? Square, 64 faces, weighing 3 17. Carat, inlaid in the crown of the British Empire.
Braganca. Invented in 1725, it is the largest diamond invented in Brazil. Almost colorless, only very pale yellow, weighing 1680 carats. I don't know where to go after that. Some people suspect that this diamond may be later tried by a more powerful tycoon and found to be topaz instead of diamond.
A big unnamed diamond. In 19 19, a gem diamond weighing 1500 carats was found in Primir Mine, and its color was similar to that of Cullinan. Because some people think that it and Cullinan were split from 1 large crystal, this diamond has no special name.
Orrick (Orrick). 1893, invented in Jaggers Fontaine diamond mine in Orange Free State, South Africa. It is smooth and transparent, blue and white, with excellent luster, and it is a diamond with excellent quality. The largest one after pondering weighs 69.68 carats and is called? Lofty? .
Star of Sierra Leone. Sierra Leone's diamonds are famous for their good grade, large volume and octahedral crystal shape. The Star of Sierra Leone was invented by 1972 in the diamond mine of Youngma in February. It weighs 968.9 carats and is colorless.
Coleman de Dios. Brazil invented it? Braganca? The largest diamond invented later, weighing 922.5 carats, is excellent in blue and white color.
Kohellonur is the oldest known diamond in the world. According to legend, it was invented as early as 1300 years ago in Kolkata, a famous ancient diamond mining area in India. The original stone weighs about 800 carats and is called? Kushner? . Later, it was processed into an oval shape, weighing 108.83 carats, colorless (slightly gray) and renamed as? Mountain of light?
The Great Mughal is also one of the world-famous ancient diamonds. About 1630? It was invented in Kola mining area of India from 65438 to 0650. The original stone weighed 787.5 carats and was processed into a rose shape, but its whereabouts were unknown.
The Weiyi River, a big diamond, 1945 was invented in the sand mine of the Voi Valley in Sierra Leone. The original stone weighs 770 carats, is almost colorless and has good taste. After that, it was cut into 30 cut diamonds, which were used to drill treasure maps. The largest is 3 1.35 carats, which is named? Victory diamond? .
Hsi Chin, 1986, was invented in Primir mine. The original stone weighs 755.50 carats and is dark golden brown. Later, a large diamond of 545.67 carats was ground. This is the largest cut diamond at present. This diamond is now embedded in the scepter of the King of Thailand.
Selection skills of diamonds
Diamonds last forever, and one lasts forever? For hundreds of years, diamond ring has been regarded as an important representative of love and marriage. Invincible diamonds are associated with eternal love, and diamonds are regarded as the best gift to express and convey love. Diamonds are almost associated with marriage. We know that diamonds are a very expensive item, and wearing diamonds is more of a possession. Noble? A symbolic ornament. Diamond ornaments are becoming more and more popular in China, becoming the third largest consumer goods after gold and platinum. Every year,150,000 people get married in China. Getting married and buying a diamond ring is becoming a fashion and a specific symbol. But what kind of diamond ring is good:
Cutting is the only human factor. A skilled diamond cutter can make a good diamond shine, and he can make the internal light reflect to the surface of the diamond to the greatest extent. The cutter must cut symmetrically, just like looking in the mirror. A good mine may be abandoned because the cutter's skills are not in place. The ideal diamond should be round, with 58 clear cut edges, which can reflect light to the greatest extent. A high-quality diamond has high value, strong reflection and symmetry, but an inferior diamond may be cut too deep or too shallow to shine. Polishing technology will also affect the quality of diamonds. Perfect cut and symmetrical diamonds may reduce their value due to poor polishing.
In some big jewelry stores, some diamonds are displayed for comparison. They arrange diamonds of various color grades in a row to help customers compare, because ordinary customers can't tell the color of diamonds with the naked eye. The color of diamonds is colorless as the top grade, and gradually comes second with the deepening of yellow.
Generally speaking, defects determine the value of diamonds. More precisely, it depends on the impurity content in the drilled ore. Almost every diamond contains diamond ring impurities, even the best quality diamond will have some defects. When its cleanliness is LC level, it can be regarded as flawless level.
Carat was once considered as the decisive criterion to measure the value of diamonds. When someone says that he bought a 2-carat diamond, people will find it unbelievable. In fact, the cut, color, purity and weight of a diamond are equally important to its value. The value of a 2-carat diamond with poor cutting technique, yellow color and defects is much lower than that of a perfectly cut, transparent and pure diamond. So the weight of a diamond is not the main factor that determines its value. The weight of a diamond still affects its value. It is important to find out whether the weight of diamonds told by jewelers is accurate.
Another important part of a diamond ring is the ring holder. The price of a diamond ring will also change with the choice of metal from which it is made. At present, the most commonly used materials are K gold and platinum. K gold is an alloy of gold and other metals. k？ To measure. ? k？ The bigger the number, the higher the purity, and 24K gold is pure gold. Most diamond rings are made of 18K gold, which is firmly inlaid, but if worn for a long time, the ring holder is easy to wear. But it is cheaper. If it is a diamond ring of 1 carat, the gold ring of 18K is cheaper than that of platinum. Platinum is a rare natural white metal with high purity, high stability and good ductility. It is the best material for making jewelry. If the diamond is specially inlaid, it can ensure the firmness and increase the absolute beauty of the diamond. Platinum has many advantages, and naturally its price is the most expensive, so the 1 carat diamond ring made of platinum is more expensive than other metals.
Matters needing attention in purchasing diamonds
Generally speaking, it is right for young people to choose diamond ornaments with low price and novel design as their starting point according to their own consumption ability. With the growth of age and economic strength, you can choose bigger diamonds and mature styles. It is not appropriate for people over 30 to wear a small diamond ring, just like putting a small light in a big room, the light is difficult to show. Choose according to your age and status, so that the diamond ornaments will complement you.
When buying a diamond ring, the first thing to choose is a diamond. If conditions permit, thick and high-quality diamonds are naturally the first choice for investment preservation. Theoretically, the higher the diamond 4C, the better. However, the requirements for clarity and color can be relatively reduced, but the perfect cut of 3EX should be guaranteed as much as possible, which is an important condition for maintaining the value. In the setting process, try to choose a ring with a pointed setting process. There are many diamond ring brands in China. In terms of design fashion and production technology, Caratini, Cartier and Swarovski are the most famous diamond ring brands. Cartier and Swarovski are international brands, and their prices are relatively expensive, with a markup rate of about 500%. Calattini diamond ring is the most famous diamond ring brand in China, and its price is relatively moderate. Its beautiful design can meet the pursuit and consumption demand of most female lovers for diamond rings.