Families of Crystals and Gemstones

Crystals can be divided into groups that have important material properties in common. There are also many examples of families within families, e.g. red jasper is a form of jasper, which is a form of chalcedony, which is a form of quartz.

Here is a simple introduction to some of the most well-known types of crystals. Most of the crystals mentioned here are also described in more detail elsewhere on this website. See the links below.

Family Name

General Information

Members of Family

Typical Uses








Tigers Eye


Let your heart be filled with joy and seek the best aspect of every situation today, and always.

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