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LOT 2744
Bi-coloured Tourmaline Crystal Mineral Display Specimen
1 1/4 in. (42 grams, 33 mm).
A section of trigonal bi-coloured tourmaline. [No Reserve]
ProvenanceProperty of a North West London, UK, lady.
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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Morton Gneiss Plate Sections
Circa 3.5 billion years B.P.Sold for (Inc. bp): £286
Comprising four 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. 233.7 kg total, 85 x 57.7 - 85 x 58 cm
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. -
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Rock Crystal Mineral Display Specimen
Sold for (Inc. bp): £26
A double-terminated clear quartz crystal. 58 grams, 71 mm
Property of a North West London, UK, lady. -
Limestone Mineral Display Specimen
Sold for (Inc. bp): £39
A polished polygonal specimen of fossiliferous limestone. 380 grams, 77 mm
Property of a North West London, UK, lady.
