Borazon is a brand name of a cubic form of boron nitride (cBN). Its color ranges from black to brown and gold. It is one of the hardest known materials, along with various forms of diamond and other kinds of boron nitride. Borazon is a crystal created by heating equal quantities of boron and nitrogen at temperatures greater than 1800 °C (3300 °F) at 7 GPa (1 million lbf/in2).
Borazon was first produced in 1957 by Robert H. Wentorf, Jr., a physical chemist working for the General Electric. In 1969, General Electric adopted the name Borazon as its trademark for the material. The trademark is now owned by Diamond Innovations, doing business as Hyperion Materials & Technologies, Inc., and Borazon is manufactured only by Hyperion Materials & Technologies.