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LOT 2852
Large Agate and Amethyst Column Display
24 3/8 in. (10.45 kg total, 62 cm including stand).
A thick, cut and polished geode section showing attractive layering of white, grey, and brown agate; well-formed prismatic amethyst crystals above the agate layer; mounted on a custom-made display stand.
ProvenanceFrom Artigas, Uruguay.
Property of a London lady.
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AUCTIONS:
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LOT 2852
Large Agate and Amethyst Column Display
Estimate £1,800 - 2,400€2,090 - 2,780 (for guidance only)$2,430 - 3,240 (for guidance only)
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Polished Fossil Book End Pair
Devonian Period, circa 417-354 million years B.P.Sold for (Inc. bp): £156
Cut from a fossiliferous stone, each set with a central Devonian cephalopod fossil. 3.7 kg total, 14.5 cm
From Morocco, North Africa. From a Cambridgeshire, UK, collection. -
Fossil Flexicalymene Trilobite Group
Ordovician Period, circa 510-445 million years B.P.Sold for (Inc. bp): £286
A freestanding sandstone matrix with several fossilised trilobites. 3.3 kg, 24 cm
From Morocco, North Africa. From a Cambridgeshire, UK, collection. -
Historic Roman Cut and Polished Roman Imperial Porphyry Sections
Sold for (Inc. bp): £221
Comprising two triangular pieces, cut and polished on several sides, probably recycled material mined in ancient Roman times between the 1st and 5th centuries A.D. 195 grams total, 56-58 mm
Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
Mons Porphyrites (today Jabal Abu Dukhkhan) is the mountainous site of a group of ancient quarries in the Red Sea Hills of the inhospitable eastern desert in Egypt, a five-day trip from the Nile during Roman times. They were discovered by Caius Cominus Leugas in 18 A.D., and during the Roman Empire, the mines officially belonged to the emperor and were the only known source of the Imperial Porphyry, Mons Porphyrites. This dark purple stone was associated with royalty and used for prestigious sculpture and architecture. The location of the mines was lost sometime in the 5th century and rediscovered in the early 19th century. Excavations in the area have revealed the well-preserved quarries and the dwelling places of the quarrymen, and also thousands of ostraca have been discovered containing messages that provide details of how the quarrying took place, and of how the highly skilled quarrymen ordered their food.
