A "diamond mine" is a place where diamonds are found and extracted from the ground. It is like a special type of mine that focuses on digging up diamonds instead of other minerals or materials. Full definition
When you have a specific type of diamond in mind, we always have our ear to the ground, ready to custom cut that ideal stone just for you. (black.briangavindiamonds.com)
Both the cars will get new pattern of diamond cut alloy wheels that look much more premium. (motorbeam.com)
It is sharp because there is fire with diamonds in and he shoots fire. (mummymummymum.com)