Deals Black Diamond and Sterling Silver Necklace Handmade by Chris Hay

This black diamond necklace, finished with sterling silver chain and lobster claw clasp, is 18.5 inches in length. The diamonds are two millimeters in size, uniform in color, and have a natural shape.

Most black diamonds used in jewelry get their color though various procedures. These include high pressure/high temperature (HPHT) and radiation treatments. Whether color treated or natural, however, what defines a diamond is its chemical composition (carbon with minor impurities) and its crystalline atomic structure. That is, the entire diamond can be defined deals as growing from a cubic or isometric crystal structure.