Everything you need to know about colored diamonds
What are colored diamonds? A pure and chemically perfect natural diamond structurally is transparent and can be either intensely colored and pure or completely colorless. However, in reality, almost no natural diamond is absolutely perfect. Natural colored diamonds are extremely rare. The ratio between colorless diamonds and colored diamonds is 1 in 10,000. To be clear, this means that only 0.0001% of the diamonds that are mined are colored natural diamonds.
The color of a diamond may be affected by chemical impurities and/or structural defects in the crystal lattice. Depending on the hue and intensity of a diamond's color, a diamond's color can either fade or increase its value. For example, most white diamonds are reduced in price when a more pronounced shade of yellow can be detected, while brightly colored diamonds or blue diamonds (such as the Hope Diamond) can be extremely valuable. Of all the colored diamonds, red diamonds are the rarest.
A famous colored diamond & Lady Gaga
In 2019, on the occasion of the Oscars, Lady Gaga wore on her red carpet wearing one of the most expensive, largest, and most beautiful colored diamonds in the world, belonging to the jewelry house Tiffany & Co. The jewelry is more than 100 years old and was worn only 3 times, the first time by Audrey Hepburn in the tour promoting the film that made her famous, Breakfast at Tiffany's.
Discovered in the Kimberley diamond mines of South Africa in 1877, the diamond was purchased by the eminent American jewelry dealer Charles Lewis Tiffany a year later for $ 18,000 (a label that the stone has kept to this day). The rough stone was then transported to Paris by Tiffany's gemologist, Dr. George Frederick, who cut the stone into a 128.54-carat 82-faceted round pillow - 24 more than the traditional "shiny cut". The final diamond is over an inch wide, and almost an inch long, and its bright yellow color is believed to evoke a flame burning inside. Today, the diamond is valued at $ 30 million.
Gaga wore a simple black dress to highlight the exceptional jewelry she wore. Her dress had something in common with Audrey Hepburn's Breakfast at Tiffany's.
The color of the diamond is its second most important feature
When it comes to diamonds, less color usually means superior quality. While brilliance is the first thing you notice about a diamond, the color is second. The higher the color, the lower the color, and the more expensive the stone.
After the type of diamond cut, its color is the second most important feature to consider when choosing a diamond. The highest quality diamonds are colorless, while the lower quality ones have visible colors, which usually appear as a pale yellow.
The Gemological Institute of America (GIA) rates the color of the diamond on a scale from D (colorless) to Z (light yellow or brown). DZ diamonds are also known as white diamonds, although most diamonds, including H-colored diamonds and G-colored diamonds, have different amounts of color.
When is color a good thing? When it comes to the color spectrum of the rainbow - red, orange, yellow, green, blue, pink, purple, and more. These are known as colored diamonds. Only one in every 10,000 diamonds has a natural color, and the more intense the color, the rarer and more valuable the diamond. Colored diamonds are classified on a separate color scale and can be even more valuable than white diamonds.
When choosing a material to fix a colored diamond, it is best to choose a material that will enhance the natural color of the diamond. For example, yellow diamonds are often set in yellow gold, while pink diamonds look best when set in rose gold.
Countries where colored diamonds are found
Angola is famous for white, colorless, white diamonds, and diamonds. However, pure yellow diamonds (aka canary diamonds) and brown diamonds can also be found.
Australia has the most famous diamond mine in the world - the Argyle Diamond mine. The Rio Tinto mine, which was discovered in 1979, is home to about 90% of the world's supply of pink diamonds. Moreover, the quality and strong shade that some of the mineralized roses in Argyle are recognized worldwide. Argyle Tender, where about 50 diamonds are sold each year, was the origin of some of the most famous colored diamonds - pink, purple, blue, and red diamonds are sold for millions. However, while the mine's fame comes from the rarest colors, it is less known that the mine extracts a notable portion of the world's brown diamonds.
Borneo has mainly brown and yellow diamonds, but pink, blue or green diamonds can also be found there.
Brazil is quite interesting. Most of the colored diamonds found there are yellow and brown. These diamonds are also known to have strong fluorescence, which gives them a greenish reflection. Brazil is also known to produce ultra-rare red, pink, blue, green, and deep pink diamonds.
Central Africa has a relatively small production, but among the colors that can be found are natural black diamonds and yellow diamonds. Rare, but still possible to find in Africa are pink, blue, and green diamonds.
The Democratic Republic of Congo is a powerful diamond producer. However, most of the diamonds that are mined there are low-grade industrial diamonds. The colored diamonds that were occasionally discovered were bright yellow, orange, and cognac brown, as well as combinations of these colors - yellow-orange diamonds.
Sierra Leone's mining industry plays a major role in the country's economy, with the export share of diamonds accounting for about 46% of export earnings. According to Wikipedia, in 2009, the government recorded exports of 400,480 carats. Of which 143,620 carats were industrial diamonds and 256,860 were quality diamonds for jewelry - the opposite of the situation in Congo, where more than 80% of diamonds are industrial quality.
The yellow diamonds that are mined in the Zimmi mine in Sierra Leone are extremely rare and have practiced their own category - Zimmi Yellow Diamonds. These are vivid yellow diamonds, with strong saturation, unlike any other yellow diamond. In fact, ordinary yellow diamonds looked pale next to those at the Zimmi mine. And these are appropriate prices, about 1.5 to 2 times higher than the "usual" price for a bright yellow diamond.
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