How Black Diamonds Get their Color. There are more accurate ways to authenticate black diamonds. I love black diamonds, especially in those in-and-out hoops, where the front stones are white, and the inside back of the hoop's stones are black. These diamonds may also have numerous cleavages or fractures that are … Research into the cause of color in black diamonds is relatively recent. [citation needed] Must be the mystery of the color black.The theories of Black Diamond formation have much to do with that,especially since they have been linked to supernovas.About a decade ago black diamonds were cheap, because most collectors and … Today we know that most naturally colored black diamonds get their color from large quantities or clouds of minute mineral inclusions such as graphite, pyrite or hematite that extend throughout the stone. The answer is yes and no. Black diamonds have become the diamonds for current diamond jewelry, surpassing all colored diamond categories. The easiest way to check authenticity of black diamonds is by trying to scratch them with a sandpaper. All are real but there is a vast difference between the different types of black diamonds and if you plan on buying one, you should know that there is also a HUGE difference in value. The test for a real gem-stone diamond is conducted with a probe that a jeweler can use to test the stone. Treated or enhanced black diamonds are extremely cheap. There are man-made black diamonds, there are natural black diamonds and there are treated black diamonds. Because black diamonds are opaque, this test will most likely give an inaccurate result and the device will show that what you have is a moissanite.