Before starting the process of buying a diamond, it’s crucial to have a clear understanding of the ... diamonds—grades G to J—can also appear white to the naked eye and may offer better ...

Unlike the clear diamonds of engagement rings, which are single crystals, black diamond consists of aggregations of individual crystals, which lend the gem its dark color. The largest diamond ever ...

Unlike metals or even other doped semiconductors, boron-doped diamonds remain optically clear. "Diamond continues to shine," said Giuseppe Strangi, professor of physics at Case Western Reserve ...