R
- Rainbow Amethyst
- Rainbow Fluorite
- Rainbow Hematite
- Rainbow Moonstone
- Rainbow Obsidian
- Red Agate
- Red Aragonite
- Red Aventurine
- Red Calcite
- Red Hematoid Quartz
- Red Jasper
- Red Obsidian
- Red Picture Jasper
- Red Quartz
- Red Tiger's Eye
- Red Tourmaline
- Rhodochrosite
- Rhodonite
- Red Calcite
- Rose Quartz
- Rosewood
- Ruby
- Ruby Feldspar
- Ruby Fuchsite
- Ruby on Kyanite
- Ruby Zoisite
- Rutile