Cut and polished to reveal internal calcite and aragonite structures, supported on fitted custom stand.
22½ x 17 x 5in. (57 x 43 x 13cm.) on stand

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This lot is offered by Christie Manson & Woods Ltd

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Lot Essay

Septerian nodules are clay concretions into which mineral rich fluid has intruded, forming calcite crystals, over thousands of years the calcite is partially dissolved to leave the cracked pattern we see when opened.