Agate is a type of chalcedonyquartz. It is found in many hues and often has layers of varying colors. Agate is believed to quench thirst and divert storms.
This striking gem of varying colors is a member of the chalcedony group of gems and can appear opaque or translucent. Although it occurs naturally in black, it is generally dyed black to improve its color. In India, onyx necklaces are thought to cool feelings of love.
The royal stone of ancient China, this opaque gem was said to represent love and virtue. The most common colors are shades of green, lavender and rose.
A darker variety of quartz, this gemstone is a deep, rich brown with a smoky appearance.
An exquisite purple-blue gemstone that is popular for its brilliance, Tanzanite was first discovered in Tanzania in 1967.