4cs

Gemstones And Jewelry

Before you shop, learn the four attributes that diamonds are graded on: cut, color, clarity, and carat weight. These are commonly called the 4Cs and set how a diamond looks, how...

Gemology

The most valuable diamond is defined by a combination of size, color, clarity, cut, polish, symmetry, and certification. Large, internally flawless stones with vivid color and e...