Black diamonds are used to mark the most difficult runs on a ski hill.
Black diamonds are black.
You can buy black diamonds.
Black diamonds are diamonds, but they are black, and not transparent. Follow the link, below, to see photos of black diamonds.
Mother earth makes black diamonds.
Diamonds can be found naturally occuring in a range of colors, including black diamonds. They are not artificially made.
Black diamonds that are available in the market are usually low grade white diamonds that have been colored black, however, natural black diamonds can be expensive depending on the quality.
Lethbridge Black Diamonds was created in 1992.
Black diamonds -- properly Carbonado, are real diamonds, with our without enhancements. You can read more about Carbonado, below.
Black diamonds are more rare than regular diamonds. They are one of the most rare species of colored diamonds.
Natural black diamonds are rare. They are due to dark graphite inclusions. Their rarity makes them valuable. Most black diamonds are synthetic and made by heat treating low quality diamonds. The price of a synthetic black diamond is lower than that of white diamonds.
The web address of the Idaho Black History Museum is: http://ibhm.org