Gemology Books Pleasing and didactical colloquial language, highly recommended both for people who...

Just like the colorless cut diamonds, color cut gems are assessed considering the four factors: 4Cs:...

The most important diamond deposits are found in: India: Source of the ancient diamond production...

PHYSICAL PROPERTIES: 1.- HARDNESS: Hardness is 10 in Mohs scale; it varies depending on the face...