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A cognac diamond is a dark brown type of champagne diamond. Champagne diamonds naturally contain shades of pink, gold, brown or red. Cognac diamonds get their rich, brown color from hydrogen or nitrogen combining with carbon atoms while the stone is forming in the ground.
The Argyle Diamond Mine in North West Australia produces a vast quantity of colored diamonds, including cognac diamonds. A color scale created by the mine is used to evaluate champagne diamonds. Cognac diamonds receive a rating of C7 on the color scale, making them the highest ranked type of champagne diamond.
Colored diamonds need a lot of heat to form. The Argyle Diamond Mine is located on a volcanic pipe, making it a prime area for various shades of diamonds to be uncovered. A majority of colored diamonds discovered at the mine fall into the color category of dark champagne or cognac.
Rings, necklaces and bracelets that contain cognac diamonds go with nearly any style of fashion. A cognac diamond can be set in silver, white gold or any shade of yellow gold. The rich and warm color of a cognac diamond gives the stone a lot of versatility.
The dark brown color of cognac diamonds make the stone a good choice for men's jewelery. Cufflinks and men's rings containing cognac diamonds can be found at many high-end jewelry stores. Cognac diamonds can be an acquired taste, and not every consumer might appreciate the beauty of cognac diamonds. When the fashion industry is not promoting cognac diamonds, shoppers can be find some reasonable deals on these unique gemstones.
One of the most famous diamonds in the world is a cognac diamond. In 1967, the Earth Star diamond was discovered in South Africa at the DeBeers Jagersfontein mine. This 111.59-carat cognac diamond is pear shaped. As of 2011, the Earth Star was considered the third-largest brown diamond in the world.
Hollywood actress Helen Mirren wore a cognac diamond brooch to the Academy Awards in 2006. This 62-carat piece showed a large audience of viewers the unique beauty of a cognac diamond. Her oval-shaped brooch garnered even more attention when Mirren won the Best Actress award that night.