The Orlov is one of the most intriguing diamonds in the world. It has a blurry past and it is said that it was stolen from an idol, where the stone stood as one of the eyes of the statue. However, many questions remain: First, if this is true, what happened to the other eye? Could it have been the above mentioned Koh-i-Noor? Another theory is that the Orlov diamond is actually the legendary stone called the Great Mogul, which was only described by Jean Baptiste Tavernier and it was lost forever centuries ago. Whatever the truth, The Orlov diamond is now in the possession of the Russian government and it is set in the Imperial scepter. It is estimated at 189 carats but its historical value cannot be priced.
The Florentine is an enigmatic diamond which is believed to have a light yellow color, with a green overtone and an estimated 137 carats. Its known history starts with the duke of Burgundy in the 15th century. Apparently, he died in battle while wearing the diamond. The stone was stolen from him by a peasant who sold it for a florin, because he thought it was mere glass. It then changed owners several times, for small amounts of money. In the 17th century, we find the Florentine in the possession of the Medici familly. When the last Medici died, the diamond arrived in Vienna, and became one of the Habsburg Crown Jewels. After the World War I, it was stolen and never found again, though a particular diamond was believed to be the lost one, because of its similarities with the Florentine.
9. The Heart of Eternity

The diamond which bears such a romantic name is measuring 27,64 carats . It was found in a mine in South Africa and it has a “fancy vivid blue color”, making it an extremely rare diamond. Apparently, the blue color is given by impurities of boron and most of the gems are not entirely blue. The stone was an impressive 777 carats when found and caused a rush among diggers, who started to dig like crazy, trying to find another one. However, experts estimate that such a discovery is not likely to occur in the next several hundred years.
10. The Moussaieff Red
This gem is of an amazing beauty and it is estimated at 5, 11 carats. It has a triangular brilliant cut (it features numerous facets, which offer it great brilliance). Its amazing color was established to be “fancy red” by the Gemological Institute of America. One of the most famous diamonds in the world, the Moussaieff Red was first discovered by a Brazilian digger in the Abaetezinho River in 1990 and it is believed to have had 13.9 carats.