Mineral Group · 19 minerals
Rocks & Multi-Mineral Composites
Minerals
19
Hardness
3-7 Mohs
Crystal Systems
Non-crystalline, Cubic, Orthorhombic +2 more
What Defines the Rocks Group
Not single minerals but rocks or multi-mineral assemblages valued as gem materials. Lapis lazuli combines lazurite, pyrite, and calcite. Unakite mixes epidote and feldspar. Tiger iron bands tiger eye, hematite, and jasper. These composite stones often tell richer geological stories than any single mineral could.
Minerals in This Group
Basalt
The Ocean Floor Rock
Chrysanthemum Stone
Nature's Fossil Flower
Dalmatian Stone
The Spotted Companion
Granite
The Backbone of Continents
K2 Stone
The Mountain Stone
Lapis Lazuli
The Stone of the Heavens
Limestone
The Fossil Record
Marble
The Sculptor's Canvas
Nuummite
The Sorcerer's Stone
Preseli Bluestone
The Stonehenge Stone
Quartzite
The Indestructible Sandstone
Sandstone
The Desert Archive
Septarian
The Dragon Stone
Shungite
The Carbon Shield
Slate
The Splitting Stone
Tiffany Stone
The Purple Passion
Tiger Iron
The Banded Triad
Unakite
The Stone of Vision
Yooperlite
The Glowing Stones of Lake Superior