Diamonds are extremely beautiful and typically very expensive. Although most people think of white diamonds when they imagine these gems, diamonds come in many different colors. These colored diamonds are referred to as "fancy diamonds," and they are exceedingly rare and some of the most costly gems available. Blue diamonds are one such example, and have become increasingly popular for use in fine jewelry pieces.

What Makes Them Blue

The majority of naturally occurring diamonds are formed miles beneath the earth's surface under very high-pressure conditions, and are transported closer to the earth's surface by volcanic eruptions. The main difference between a blue diamond and a traditional colorless one is the presence of boron when the diamond is being created. Large quantities of boron need to be present in order to thoroughly color the diamond blue. Diamonds that have less exposure to boron may be faintly colored and less valuable.

What's Rare is Desirable

The popularity of this type of gem can be at least partially attributed to how rare they are. Frequently, the more unique or rare an item is, the more costly and coveted it tends to be. This is very true with other luxury goods including antique cars, one-of-a-kind designer gowns, and exceptional bottles of wine. There is something highly desirable about owning something that few people do, particularly if it is stunningly beautiful.

Famous Blue Diamonds

The Hope Diamond is often called the most famous diamond in the world, and is also referred to as "Le bleu de France" (the Blue of France). It is a 45 carat diamond that now resides in the Smithsonian Museum in Washington, D.C. The Hope Diamond has had numerous owners over its illustrious history and is also supposedly cursed. The value of the Hope Diamond is roughly estimated at $200-$250 million dollars. Another famous diamond of this color is the Wittelsbach Diamond. It weighs over 30 carats, and once belonged to the King of Spain. It was sold by Christie's auction house in 2008 to jeweler Laurence Graff for over $20 million dollars.

These distinctly colored gems can really stand out in the crowd. Their unique beauty is a big part of their allure. Because of the rising popularity of blue diamonds, jewelry containing these dazzling gems is in high demand. If you have blue diamond jewelry you're interested in selling for cash, call (480) 949-9299 today to receive a fair and honest appraisal from the GIA gemologists at Ralph Mueller and Associates.