glass
mineral · common
Quick facts
- Formula
- SiO2 (with additives)
- Hardness
- 5-6
- Luster
- vitreous
- Colors
- various
Glass is a common material used for decorative purposes and can be made in various colors and forms.
Look for uniform color and transparency, often with bubbles or mold lines.
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Photograph your specimen on arockid.com or in RockSnap / RockID. Three free IDs a day — no card.
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