Crystals That Start With S

All 34 stones beginning with S

• Silver Mohs 2.5–3
• Sapphire Mohs 9.0
• Sulfur Mohs 1.5–2.5
• Snowflake Obsidian Mohs 5–6
• Sandstone
• Slate
• Spinel Mohs 7.5–8.0
• Shale
• Soapstone
• Schist
• Sodalite Mohs 5.5–6
• Sunstone Mohs 6.0–6.5
• Stibnite Mohs 2
• Scoria
• Shungite
• Sphalerite Mohs 3.5–4
• Selenite Mohs 2
• Smoky Quartz Mohs 7 – lower in impure varieties (defining mineral)
• Spodumene Mohs 6.5–7
• Serpentine Mohs 2.5–6 (original) 3.5–4.0 (antigorite) 2.5 (lizardite) 2.5–3.0 (chrysotile)
• Scheelite Mohs 4.5–5
• Siderite Mohs 3.75–4.25
• Sillimanite Mohs 7
• Spessartine Mohs 6.5 – 7.5
• Sugilite Mohs 6–
• Staurolite Mohs 7 – 7.5
• Sardonyx Mohs 6.5–7
• Smithsonite Mohs 4.5
• Scapolite Mohs 5.5–6
• Stilbite Mohs to 4
• Scolecite Mohs 5 to
• Stichtite Mohs 1.5–2
• Schorl Mohs 7.0–7.5
• Seraphinite Mohs 2–2.5