Emerald

Mohs Hardness Scale  7.5 - 8

The most famous member of the beryl family, Emerald's  distinct soft green color is said to be a stress reliever for the eyes.  The most coveted of emeralds are mined in Columbia and are very limited in terms of the availability of fine quality rough. This stones is May's birthstone and is also the gemstone used to celebrate the twenty-fifth wedding anniversary.