Loading, please wait...
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).
TimeLine 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.
-
Natural History - Cut and Polished Fossil Ammonite
Jurassic Period, 199-145 million years B.P.Sold for (Inc. bp): £26
A pair of cut and polished fossil ammonite halves, each displaying the gas chambers; possibly Cleoniceras sp. 405 grams total, 11.9 cm wide each
From Madagascar. Collected between 1930 and 1960. From the collection of the palaeontologist R Gledhill. -
Natural History - Cut and Polished Amethyst Crystal Obelisk Group
Sold for (Inc. bp): £20
A trio of cut and polished amethyst obelisks; held in a white card collector's tray. 52 grams total, 42-53 mm
Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
Natural History - Large Cut and Polished Agate Crystal Geode Slice
Sold for (Inc. bp): £117
A large blue-coloured cut and polished agate geode slice; colour-enhanced. 660 grams, 28.2 cm
Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's).
