Spherical Sedimentary Concretion

4 in. (647 grams, 10.2 cm).

Naturally formed from hardened sediment with projecting porous, black stone nodules. [No Reserve]

Provenance

Acquired on the UK art market in the 1990s.
From the Dr Ince collection, N.W. London, UK.

Footnotes

A concretion is a compact mass of mineral matter, usually spherical or disc-shaped, and they vary greatly in size. They usually form early in the burial history of sediment, before the rest of the sediment has hardened into solid rock. Concretions occur when a considerable amount of cementing material collects locally around a nucleus, often organic (a leaf, tooth, a section of fossil or shell or dead matter) and commonly a marine invertebrate.

CONDITION

VETTING:

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.

LOT 2707