Aquamarine, meaning “seawater,” comes in colors of light blue to blue green beryl. It has a Moh's hardness of 7.5 - 8.
The most valued colors of aquamarine are sky blue and dark blue and the best quality stones come from Brazil.
Aquamarine is frequently heat treated to enhance the blue color.
Aquamarine is reported to have healing properties with eye inflammation, arthritis, and varicose veins.