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LOT 1841
Natural History - Porphyry Cut Slice Group
3 3/8 - 6 1/4 in. (244 grams total, 8.5-16 cm).
A group of ten porphyry slices of irregular shapes, cut and polished on both sides, probably recycled material mined in ancient Roman times. [10, No Reserve]
ProvenanceMineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's).
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AUCTIONS:
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LOT 1841
Natural History - Porphyry Cut Slice Group
Sold for (Inc. bp): £104
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Natural History - Emerald in Biotite Mica Specimen
Sold for (Inc. bp): £65
A substantial specimen of green emerald crystals in biotite mica matrix; supplied in a cardboard specimen tray. 680 grams, 15 cm
Very fine condition.
Mineral Imports, London, UK. Ex Gregory, Bottley & Lloyd (Gregory's). -
Natural History - Citrine and Amethyst Gem Tree
Sold for (Inc. bp): £13
A medium size gemstone tree comprising a brass trunk and branches tipped with polished citrine pebbles, mounted on a section of amethyst geode. 623 grams, 16 cm high
Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
Natural History - Polished Fossil Nautilus
Cretaceous Period, circa 120 million years B.P.Sold for (Inc. bp): £72
A polished fossil Cymatoceras sakalavus nautilus. 208 grams, 75 mm
From the jungles of Mahajanga on the North West coast of Madagascar. From an old Oxfordshire, UK, fossil and mineral collection.