1.Jadeite : USD $ 3 + Million / Carat
Until recent years jadeite has been a mystery mineral, but we now know of primary sources in Guatemala as well as several California occurrences jadeite white or grayish. rocks where a few small freestanding crystals have been seen occur in San Benito Co. , California, with additional searches in Clear Creek, between New Idria and Hernandez-. All jadeite is Mexican artifacts from unknown sources. The record price for a single piece of jewelry jadeite has been set for sale Kong 1997 November Christie's Hong: Lot 1843, the "double chance" necklace of 27 beads jadeite about 5 mm sold for U.S. $ 9.3 million.
2. Diamant red USD $ 2-2.5 Million / Carat
Only a few red diamonds have been found, and few people have seen a red diamond Treaty. Jewel is described as a purplish red, so it is not a pure red, red, vermilion, or scarlet. Nevertheless For its size, it is one of the most expensive diamonds. 's Argyle mine in Australia produces a small number of red diamonds. 's largest and most beautiful of them are auctioned every year or two, and sell for millions of dollars.
3.Serendibite : USD $ 1.8-2 Million / Carat
The Serendibite a cyan color that comes from Sri Lanka. It has a very complex formula consisting of calcium, magnesium, aluminum, silicon, boron and oxygen. far, there were only three specimens cut (faceted) 0.35 carats, 0.55 carats and 0.56 carats. The first two were discovered by rare stone specialist Gunasekera DP and purchased by the late Professor EJ Gübelin Switzerland. Smallest was sold for about $ 14,300.00 per carat.
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