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![Large Group of One Hundred [100] Amethyst Crystal Sections](https://timelineauctions.com/zoom_images/zoomthumb/2/5/255957_900x900.jpg "Large Group of One Hundred [100] Amethyst Crystal Sections")
![Large Group of One Hundred [100] Amethyst Crystal Sections](https://timelineauctions.com/zoom_images/zoommap/2/5/255957_200x200.jpg "Large Group of One Hundred [100] Amethyst Crystal Sections")
![Large Group of One Hundred [100] Amethyst Crystal Sections](https://timelineauctions.com/upload/images/items/255957.jpg "Large Group of One Hundred [100] Amethyst Crystal Sections")
LOT 2401
Large Group of One Hundred [100] Amethyst Crystal Sections
7/8 - 2 5/8 in. (2.19 kg total, 21-66 mm).
Comprising mainly irregular geode sections with prismatic amethyst crystals. [100, No Reserve]
ProvenanceFrom Brazil.
Ex Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
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AUCTIONS:
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LOT 2401
Large Group of One Hundred [100] Amethyst Crystal Sections
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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Historic Roman 'Spartan Basalt' Cut Green Porphyry Strip Group
Estimate: £80 - 100 (+bp*)
Bids: 2 | Current Bid: £15
Cut and polished sections, mined in Greece, cut and polished on both sides, probably recycled material mined in ancient Roman times. 225 grams total, 4.4-15.1 cm
Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
Also known as Lapis Lacedaemonius and Porfido Verde Antico, a type of green porphyry quarried in Greece. Spartan basalt is a form of andesite or volcanic rock known today only from a single source in the village of Krokees on the Peloponnese in Greece. In addition, ancient sources mention a quarry of Lapis Lacedaemonius in Taygetus. -
Fossil Agadir Ammonite
Cretaceous Period, circa 110 million years B.P.Estimate: £20 - 30 (+bp*)
Opening Bid: £5
Showing distinctive ribbing. 426 grams, 10.4 cm
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. -
Fossil Harpes Trilobite in Matrix
Middle Devonian Period, circa 380 million years B.P.Estimate: £30 - 40 (+bp*)
Opening Bid: £5
Roughly semicircular head, and the genal roll with genal prolongations. 117 grams, 77 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.
