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Mineralati

Crystals

4 results

Geodes at rock and gem show, Oregon Mineral

Amethyst

Formula
SiO2
Mohs
7
Colour
Purple
Zambian emerald gemstone Gemstone

Emerald

Formula
Be3Al2Si6O18
Mohs
7.5–8
Colour
Green
Mineral

Heliodor

heliodor

Formula
Be3Al2Si6O18
Mohs
7.5–8
Colour
Yellow to greenish-yellow
Quartz, Tibet. Mineral

Quartz

Formula
SiO2
Mohs
7
Colour
Colourless, white, purple, pink, brown, black