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Rock guide

green glass

mineral · common

Quick facts

Formula
SiO2 (with additives)
Hardness
5.5
Luster
Vitreous
Colors
Green

Green glass is often used as a substitute for more expensive gemstones. It is made by adding metal oxides to molten glass.

Look for uniform color and possible bubbles or swirls inside.

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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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