Pink Diamond Ring Diamonds....

Colored diamonds command a high price at auction. Christie's sold a much smaller 13.39 carat blue diamond for $8.9 million. A Great collection of beautiful diamond pendants jewelry at Ross- Simons.

Yellow diamonds are in this days, mounted in a beautiful ring, as a pendant, diamond earrings or just a solitaire it looks real good, together with some gold or platinum  they fetch high prices, the same is with a pink diamond. The 603 carat white diamond, the Lesotho Promise was sold in Antwerp for US$12.36 million. The uncut 

diamond, which has been named The Lesotho Promise, is the largest gem-quality diamond found this century and ranks as the 15th largest diamond ever found.

The Gemological Institute of America has categorized the pink diamonds into five

-Where they are mined

Before the second half of the 19th century, stones were mined from alluvium only, that is soil or sediments deposited washed out by a river or running water. The great South African findings in the 1860's revealed that the very rare rock type kimberlite is the true home of diamonds deposits.

The first crystals were found loose in the so-called "yellow ground" of weathered kimberlite, and the unaltered "blue ground" below showed diamonds too.

A big and very clear shining and transparent stone was discovered in 2008 at a diamond mine in the Kingdom of Lesotho in South Africa, the 500-carat white diamond it is one of the largest diamond ever discovered. The stone was found in the Letseng mine of Lesotho. A similar diamond stone was found before and estimated to have a value of about 12 million U.S. dollars.

This Lesotho stone called the “Lesotho Promise” is even more pure and has presumably more value. The Lesotho promise could be cut to 150 carat stone and thus more valuable than any of the British Crown Jewels: The Koh-i-Noor, the British “aquired” as colonial bounty in the 19th Century in India had 105 carats, the diamond cut of the stone is rather simple.

The most valuable stone so far is the Great Star of Africa with 530 carats. The drop-shaped gem was cut and polished from the 1905 discovered Cullinan Mine diamond, that diamond had 3106 carats as a raw diamond stone. The Letseng mine in Lesotho belongs to 70 percent to the London-registered company Gem Diamonds and 30 percent to the government of Lesotho.

Probably the first diamonds came from India, already to the ancient Romans Indian diamonds were well known and they were traded around the "Gulf of Cambay" (presently Gulf of Khambat, near Mumbai). From the days of the Romans, through the centuries and into the Renaissance the diamond road was from India to Europe. One trade route was overland via Persia - today Iran- and Byzantium to Rome and Venice. A southern route was by ship through the Indian Ocean and through Arabia to Alexandria in Egypt and the final destination was again Italy.

There are plenty of diamond mines worldwide, but very little for a pink diamond,  among others are are in Botswana, in the in the Kalahari Desert, Debswana Diamond Company. Another bigger diamond mine is the Williamson mine in Tanzania. One of the biggest producer of diamonds is the Republic of South Africa and one the most famous mines there is the Cullinan Diamond Mine where continuously big stones are found.

A rather small producer is the Central African Republic. The diamonds found in Cuango River area in Angola and at nearby Sierra Leone are also known as conflict or blood diamonds, The diamond mines of Sierra Leone are located in the hilly terrain north of the town of Kenema. At Ghana small numbers of alluvial diamonds are found from time to time.

Princess cut diamond ring

the Argyle mine is also famous for a great pink diamond, fitting perfect as a princess cut diamond ring. A new star in the world of diamonds came up in 1725, when some shiny stones were found at Brazil in an alluvial gold deposit near the town of Tejuco (now Diamantina), in Minas Gerais, they were identified as diamonds of gem quality.

In the new age companies such as Cartier, Van Cleef & Arpels, Harry Winston and Tiffany are producing high end diamond jewelry and they did a good job, but sometimes not so good. I still have a Harry Winston timepiece called watch for about $ 10.000. It was, over years not possible to wear since Harry Winston cant fix a bracelet or band on it which would last for more than 3 month. I took this to Harry Winston in Geneva for repair, no way, they are too stupid to fix the band to the timepiece lasting for more than 3 month and this went on for about 12 years. So stay away from this company they are amateurs even worst than a watch band seller at the Patpong night market at Bangkok, Thailand, you know where the Thai Bar Girls and go-go girls are.. The guy fixed this in 15 minutes and after it was always ok, he took 2 dollars to fix, Harry Winston takes $ 200,- and fixes nothing, this amateurs are really sickening.

When you buy gold diamond rings, diamond necklace or similar be also very careful, because you are focused on this outstanding piece of princess cut diamond which finally is the center of the ring the company who makes the the ring know you wont be very bullish on the gold, so they

mix a low level gold together. This is  rampant in Asian countries, in particular Thailand. A jewelry price is the precious stone and the gold or platinum, titanium or silver. Interestingly the purest gold they sell in the Gulf States and Switzerland, actually the Gulf States including Saudi Arabia usually purchase their gold and diamonds via Switzerland and not Antwerp or US because the diamond business in Antwerp and the US is 100% in Jewish hands.

Probable the most beautiful and valuable diamond jewelry today are color diamonds such as a pink diamond set in gold and the right diamond cut give a perfect diamond ring. One  can say a lot about carat and diamond cut but today's fashion is tending to Princess cut and Asscher cut diamonds since they reflects the light like no other cut and they

Diamond Sapphire Ring Diamond Sapphire Ring Pear Shape Diamond Sapphire Ring Pear Shape

hide some impurities in a clever cutting manner. However in which direction you turn it, a diamond is the king of gemstone and a ruby gemstone is the undisputable queen.

This was a mystery until the South African kimberlite pipes were discovered. In 1905, De Beers general manager Gardner F. Williams published the -The Diamond Mines of South Africa-, but it didn't clear the picture on how and where diamonds form. In 1932, his son, Alpheus F. Williams, published his own work, -The Genesis of the Diamond-, with three theories.

Some geologists thought that diamonds crystallized out of kimberlite magma during the time when the magma was solidifying in the pipe. After a long back and forward over dozens of years the picture how diamonds are formed got clear. The stones are not products of the kimberlite but, as components of xenoliths, a diamond stone is more or less passenger on the kimberlite express to the surface.

This discovery is the result of mid to late 20th-century research: first by modern geology research and second by using latest analytical studies utilizing sophisticated instruments for the investigation of the mineral components of the inclusions in diamonds. Research on inclusions in diamonds brought reasonable results only in the 1970's, with the availability of advanced X-ray diffraction techniques, electron and ion microprobe analyses, and the dating of trace isotopes. With this techniques 22 mineral materials have been identified as inclusions in diamonds, naturally diamond jewelry such as a diamond ring has a better value if there are less inclusions plus the right diamond cut.

leading diamond producer in terms of production by value. Aside of the big mines as indicated above plenty of smaller mines are working. Production is controlled by Debswana Diamond Co., a joint venture of 50% owned by De Beers and 50% by the government. Diamonds of the Orapa mine have mostly some shades of yellow. The Jwaneng Mine located in the south of the country is the second most productive diamond mine in the world, only behind the Argyle mine in Australia, relative to carat-weight and the world's number one relative to value.

Zimbabwe is newcomer in the Diamond mine business in 2006 huge diamond deposits were discovered which are mined now, here is a picture from the Marange Diamond Mine in eastern Zimbabwe.
 

When the Portuguese discovered the first diamonds in their new colony all diamonds a decree was issued that all of them are the property of the Portuguese kingdom state and all diamond mining is a Crown monopoly. This policy was the reason that

nothing happen concerning diamond mining for a long time. All diamond mining in Brazilian Diamond Fields from 1725-1865 was in alluvial deposits, only the mid-20th-century hundreds of kimberlite outcrops were found. There are plenty of diamond fields in the southern half of Brazil and the richest sites stretch along the Jequitinhonha River north of the town of Tejuco (Diamantina). Diamonds are found in gupiaras means coluvial terraces above the streambeds and gravel deposits in the streams. A systems of hoses, sluices, pumps and washing crates is used to find the diamonds local people also search the area. With the machinery they produce about 1 carat of diamonds for each 100 cubic meters of gravel.

A large-scale diamond rush started in the 1960's, when alluvial diamonds were discovered in the Morro Vermelho Formation, high-quality diamonds were found and that attracted several major diamond mining companies to start searching for diamonds as a result more than 50 kimberlite pipes were discovered. Places at the southern tip of the Rondonia province and at the northwestern part of Mato Grosso province also have large deposits of diamonds. Mining is not allowed since this is protected homeland of the Cinta Larga People; but illegal miners don’t care and estimates are that diamonds of around 50 million dollars are