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LOT 2885
Cut and Polished Amethyst Slice
4 3/4 in. (176 grams, 12 cm).
An irregular slab of amethyst 'chevrons'. [No Reserve]
ProvenanceFrom a Cambridgeshire, UK, collection.
CONDITIONTimeLine Auctions follows a vetting process to ensure the authenticity and legality of all items, reinforcing our commitment to integrity and responsible trading. Each antiquity, antique, and coin lot undergoes thorough examination by a vetting committee of at least ten external specialists, professional trade association members, scientists, and archaeologists: Our Vetting Process
AUCTIONS:
TimeLine is a leading auction house specialising in antiquities, ancient art, collectables, natural history, coins, medals, and books. Our auctions offer museums, collectors, historians, and enthusiasts the opportunity to acquire unique and historically significant pieces.
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Very Large Madagascan Fossil Tree Trunk Section
Circa 135-200 million years B.P.Sold for (Inc. bp): £13
A cut section showing some internal banding and bark detailing on the outside. 4 kg total, 19 cm
From Madagascar. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK. -
Fossil Mineral Mud Formation Specimen Group
Sold for (Inc. bp): £7
Comprising three ironstone regolith concretions formed by the hardening of iron-rich mud in layers. 942 grams total, 9-13.6 cm
From the Sahara, Morocco, North Africa. From a Cambridgeshire, UK, collection. -
Historic Roman 'Spartan Basalt' Cut and Polished Green Porphyry Sheet Group
Sold for (Inc. bp): £143
Cut and polished sections, mined in Greece, cut and polished on both sides, probably recycled material mined in ancient Roman times. 221 grams total, 11.9-14.5 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.
