S
- Sapphire
- Sardonyx
- Scolecite
- Selenite
- Orange Selenite
- Septerian
- Seraphinite
- Serpentine
- Shattuckite
- Shell
- Shiva
- Shungite
- Sierber Agate
- Silky Fluorite
- Silver Sheen Obsidian
- Smithsonite
- Smokey Quartz
- Snowflake Obsidian
- Sodalite
- Sphalerite
- Spider Web Jasper
- Spinel
- Spirit Quart
- Staurolite
- Stichtite
- Stilbite
- Strawberry Obsidian
- Strawberry Quartz
- Stromatolite
- Suglite
- Sunstone
- Super Seven