1) Superhard material
Found on
https://www.crosswordclues.com/clue/heterodiamond
Heterodiamond is a superhard material containing boron, carbon, and nitrogen (BCN). It is formed at high temperatures and high pressures, e.g., by application of an explosive shock wave to a mixture of diamond and cubic boron nitride. The heterodiamond is a polycrystalline material coagulated with nano-crystallites and the fine powder is tinged wi...
Found on
http://en.wikipedia.org/wiki/Heterodiamond
No exact match found.
