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LOT 2397
Large Polished Orthoceras Fossil Oval Platter
DEVONIAN PERIOD, CIRCA 400 MILLION YEARS B.P.
14 in. (1.42 kg total, 35.5 cm).
Shallow platter carved from fossiliferous stone containing several Orthoceras specimens. [No Reserve]
ProvenanceEx 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:
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Morton Gneiss Plate Sections
Circa 3.5 billion years B.P.Sold for (Inc. bp): £156
Comprising three rectangular sections of grey pink and black medium to coarse-grained biotite-quartz-plagioclase gneiss with polished upper face, each with wooden backing and one cracked. approx. 84 kg total, 85 x 58 cm each
Canadian Shield, Minnesota River Valley, Southwestern Minnesota, USA. with Phillips, New York, 3 June 1995, no.81. Private collection, Florida, acquired at the above sale. with Sotheby’s, New York, 28 April 2021, no.27 (est. $2,500–3,500).
The world’s oldest known rocks come from the Canadian Shield area of North America. Among the most ancient is the present material, Morton Gneiss at approximately 3.5 billion years old believed to be part of Earth’s first planetary crust. The swirls and layers are a result of metamorphism that incurred when the original volcanic rock was buried to tremendous depths. -
![Group of Fifty [50] Amethyst Crystal Sections](https://timelineauctions.com/upload/images/items/small/255959-s.jpg)
Group of Fifty [50] Amethyst Crystal Sections
Sold for (Inc. bp): £26
Comprising fifty irregular geode sections with small prismatic amethyst crystals. 2.84 kg total, 23-60 mm
From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK. -
Polished Amethyst Crystal Geode Display with Calcite
Circa 140-120 million years B.P.Estimate: £1,000 - 1,400 (+bp*)
Opening Bid: £550
The outer layer of green celadonite beautifully polished, the interior with dark purple prismatic amethyst crystals, and at the top, an aggregate of white rhombohedral calcite crystals; mounted on a custom-made display stand. 5.68 kg, 27 x 20 x 10 cm
From Artigas, Uruguay. Property of a London lady.
