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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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Natural History - Large 75.5 Carat Hexagonal Ruby Crystal
Sold for (Inc. bp): £13
A large ruby crystal, hexagonal in plan with striations. 15.1 grams, 28 mm
Fine condition, chipped.
Ex UK art market, 1970s. Property of a London gentleman. -
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Natural History - Fossil Ammonite Carved Bowl
Devonian Period, 400 million years B.P.Sold for (Inc. bp): £42
A large, polished bowl, carved from fossiliferous limestone, exhibiting several Orthoceras, goniatites and a large display ammonite. 925 grams, 22.4 cm wide
Very fine condition.
From Atlas Mountains, Morocco, North Africa. Private Shropshire, UK collection. -
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Natural History - Polished Baltic Amber with Large Diptera Fly
Oligocene Period, circa 45 million years B.P.Sold for (Inc. bp): £121
A good sized polished block of Baltic amber with multiple inclusions including a large Diptera insect. 7.56 grams, 63 mm
Fine condition.
From the Baltic Sea coast, Primorskoje mine, Kaliningrad. English collection formed in the 1990s. UK art market. Property of an Essex gentleman. Accompanied by an illustrated identification card with provenance.
