Mo0hs Scale of Hardness: The following is a chart of mineral gemstones and gemstone-like materials you're most likely to find in jewelry.

There are a wide range of gemstones used in jewellery, with each having its own characteristic colour – or, in some cases, a range of colours. The origen of these colours has a chemical basis…

What is the toughest gemstone? Which ones are easily scratched? These questions are many more answered in our informative article on gemstone hardness. Moh...

Gemstone Identification Chart, Gemstone Colors

The Mohs hardness scale measures a mineral's resistance to scratching. Find the traditional scale here and a chart of select gems ordered by hardness.