Nesosilicates

This group is the simplest of all the silicate subclasses. They are characterized by isolated silicate tetrahedra that are bound to each other only by positively-charged elements.

Minerals of the nesosilicate subclass have a higher density, index of refraction, and hardness than chemically similar silicates in other subclasses. Consequentially, there are more gemstones in the nesosilicates than in any other silicate subclass.

Minerals

Andalusite
Chondrodite
Datolite
Garnet
Kyanite
Olivine
Phenacite
Sillimanite
Staurolite
Topaz
Zircon

Mineral Photos courtesy of R.Weller/Cochise College