Gemstone Guides

What is a Natural Gemstone?

A stone can be advertised as genuine, real, created or cultured, and not one of those words tells you reliably what it is. Learn what natural actually means, why treated stones are still natural, a...

Carats Explained: ct vs K, and Why a Carat Isn't Always the Same

The same word does two unrelated jobs: one measures how much of a metal is gold, the other measures how heavy a stone is. This guide explains why a one-carat sapphire faces up smaller than a one-ca...