Quartz (rock crystal)
mineral · common
Quick facts
- Formula
- SiO2
- Hardness
- 7
- Luster
- vitreous
- Colors
- Colorless to milky; may be smoky
Rock crystal is the colorless variety of quartz, abundant in many geological settings and commonly sold as clusters and points.
Hexagonal prisms with pyramidal terminations, white streak, no cleavage, hardness 7, and lack of body color.
Scan yours
Photograph your specimen on arockid.com or in RockSnap / RockID. Three free IDs a day — no card.
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On the App Store, search RockSnap. Links go live when Apple and Google approve the listing. Use the web app today — same account.