Mineral Guide
Gems
How the Earth was Formed
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Agate gem stone
Amethyst gem stone
Crocidolite gem stone
Hornblende gem stone
Malachite gem stone
Quartz gem stone
Serpentine gem stone
Sulphur gem stone
Tourmaline gem stone
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Quartz and the Silicates
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Mineral Gallery
Mineral Gallery
Agate gem stone
Amethyst gem stone
Crocidolite gem stone
Hornblende gem stone
Malachite gem stone
Quartz gem stone
Serpentine gem stone
Sulphur gem stone
Tourmaline gem stone
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