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LOT 2329
A Collection of High Quality Crystal Specimens
1 3/8 - 2 7/8 in. (658 grams total, 36-73 mm).
Comprising: two quartz specimens from the famous Minas Gerais in Brazil; two pyrite specimens from Huanaco in Peru; dark purple amethyst from Antigas in Uruguay; and a crystalline malachite specimen. [6, No Reserve]
ProvenanceFrom Brazil, Peru, Uraguay, and The Democratic Republic of Congo.
Ex Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
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AUCTIONS:
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LOT 2329
A Collection of High Quality Crystal Specimens
Estimate £30 - 40€35 - 46 (for guidance only)$41 - 54 (for guidance only)
Opening Bid
£5 (EUR 6; USD 7) +BP*
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29 Carat Rough Natural Uncut Aquamarine Crystal
Estimate: £80 - 100 (+bp*)
Opening Bid: £5
Pale blue specimen exhibiting vitreous lustre. 5.82 grams, 22 mm
Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK. -
Polished Fossil Orthoceras Specimen Collection
Devonian Period, circa 417-354 million years B.P.Estimate: £20 - 30 (+bp*)
Bids: 1 | Current Bid: £5
Comprising four polished specimens. 126 grams total, 47-83 mm
From the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; his collection of antiquities and natural history was formed since 1948; thence by descent. -
Historic Roman Cut and Polished Roman Imperial Porphyry Fragment Group
Estimate: £100 - 140 (+bp*)
Bids: 2 | Current Bid: £15
Comprising cut and polished pieces, probably recycled material mined in ancient Roman times between the 1st and 5th centuries A.D. 270 grams total, 3.3-15.5 cm
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.
