The word "diamond" is derived from an ancient Greek word . Diamonds are the best known natural substance on earth. These stones of great price are known for their beauty, durability and strength. The hardness of diamonds depends on their degree of purity . Pure and blameless diamonds have higher hardness . Gemstones have extraordinary optical characteristics.
They appear clear, transparent and colorless. Gemstones are widely used in jewelry, including brooches, necklaces , earrings and rings. Besides existing in colorless form , diamonds are also available in the form of color. Some colored diamonds are yellow , brown, green, purple , orange , red, pink, black and natural blue diamonds.
Diamonds are formed color due to the presence of impurities in the crystal lattice . Blue natural diamonds are formed due to the presence of boron in the structure . Vary the shades of blue depending on the amount of boron present . The intensity of the blue color increases with the increase of the amount of boron . Different shades of blue found in natural blue diamonds are blue , fancy, fancy dark blue fancy light, fancy vivid blue , light blue, blue-green, deep blue and deep grayish blue .
Natural blue diamonds are the rarest , most precious and expensive. These colored gemstones are less than 0.1 percent of all diamonds produced in the world. These gems are valued more because of their rarity, legendary mystical timeless and majestic beauty . These precious stones were used in necklaces , crowns and other royal objects style jewelry worn by kings, queens and aristocrats . These gemstones blue color symbolizes peace and serenity. They are considered a symbol of classic and sophisticated elegance.
These colored stones are very expensive. They may be priced at $ 550,000 to $ 580,000 per carat. In addition, the value of the gemstones increases with increasing purity and intensity of color. The most valuable blue hues are fancy , fancy intense blue and vivid imagination. A light blue color diamond fancy can cost up to $ 70,000 .
The most famous natural blue diamond in the world is the Hope Diamond . The largest blue diamond originally weighed 112.25 carats when it was found in Golconda , India in the early 1600s. The weight of the cut gemstone is 45.52 carats. The diamond is named after King Henry Philip Hope. The stone is known for its notorious past. The diamond was sold to King Louis XIV of France and became part of the French Royal Treasury . The gemstone is now displayed in the Smithsonian Institution in Washington DC
Other famous blue diamonds are Orlov diamond and the eyes of the idol. These stones were stolen statues of deities. Another famous blue diamond is diamond Wittelsbach . The stone that once belonged to the King of Spain , weighs 35.56 carats. The gemstone was sold $ 24 million at the Christie's auction .Blue Diamonds - Here through the story here for the future




