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Geodes

Geodes demand centuries to be created and illustrate the marvelous feats possible in the natural world. Formed from cavities created by the consistent flow of water, geodes are an eternally entertaining geological formation for all ages from young children to seasoned adult connoisseurs.

A brilliant mineral manifestation, geodes form in the cavities of sedimentary or ingenious rock left behind by an air bubble. The shell of these stones is porous, and when water passes over them, the mineral content of that water can seep into the pores, leaving deposits in the interior void. Mineral crystals then slowly build over time, some taking thousands or even millions of years to form.

Resulting from this extended process is a breathtakingly beautiful network... Read more

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Items in Geodes

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Halved Geode Specimen

August 30, 2016, 9:00 AM CST
Fort Worth, TX, USA

$5 (starting bid)

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Natural History - Large Amethyst Cathedral with 'Snowflakes'

September 3, 2016, 10:00 AM BST
London, United Kingdom

£360 (starting bid)

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Natural History - Large Citrine Geode

September 3, 2016, 10:00 AM BST
London, United Kingdom

£130 (1 bid)

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Natural History - Amethyst Geode Pair

September 3, 2016, 10:00 AM BST
London, United Kingdom

£5 (starting bid)

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Natural History - Amethyst Geode Pair

September 3, 2016, 10:00 AM BST
London, United Kingdom

£5 (starting bid)

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Natural History - Polished Geode Section

September 3, 2016, 10:00 AM BST
London, United Kingdom

£5 (starting bid)

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Two Agate Geodes Of Semi Circular Form

September 10, 2016, 3:00 PM BST
Corsham, United Kingdom

£80 (starting bid)

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Natural History - Amethyst 'Twin's' Geode Section

September 16, 2016, 10:00 AM BST
Harwich, United Kingdom

£5 (starting bid)

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Natural History - Malawi Agate Polished Geode Pair

September 16, 2016, 10:00 AM BST
Harwich, United Kingdom

£5 (starting bid)

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Natural History - Citrine Gem Tree

September 16, 2016, 10:00 AM BST
Harwich, United Kingdom

£5 (starting bid)

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Natural History - Polished Amethyst Display

September 16, 2016, 10:00 AM BST
Harwich, United Kingdom

£5 (starting bid)

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Natural History - Agate Geode Polished Mineral Specimen

September 30, 2016, 10:00 AM BST
Harwich, United Kingdom

£5 (starting bid)

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