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![Bicoloured Rose Quartz Mineral Specimen Group [40]](https://timelineauctions.com/zoom_images/zoomthumb/2/2/227818_900x900.jpg "Bicoloured Rose Quartz Mineral Specimen Group [40]")
![Bicoloured Rose Quartz Mineral Specimen Group [40]](https://timelineauctions.com/zoom_images/zoommap/2/2/227818_200x200.jpg "Bicoloured Rose Quartz Mineral Specimen Group [40]")
![Bicoloured Rose Quartz Mineral Specimen Group [40]](https://timelineauctions.com/upload/images/items/227818.jpg "Bicoloured Rose Quartz Mineral Specimen Group [40]")
LOT 2802
Bicoloured Rose Quartz Mineral Specimen Group [40]
1 5/8 - 3 1/2 in. (3.05 kg total, 40-88 mm).
Comprising large chunks of pink rose quartz, some with iron deposits. [40, No Reserve]
ProvenanceFrom Madagascar.
Ex Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
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:
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![Uncut Natural Sapphire Crystal Group [4]](https://timelineauctions.com/upload/images/items/small/227942-s.jpg)
Uncut Natural Sapphire Crystal Group [4]
Sold for (Inc. bp): £7
Comprising four light blue specimens. 10 grams total, 12-17 mm
Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK. -
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Large Rainbow-coloured Carborundum Crystal Display Specimen
Sold for (Inc. bp): £33
A large cluster of silicon carbide showing beautiful iridescence. 1 kg, 16 cm
From the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; his collection of antiquities and natural history was formed since 1948; thence by descent.
Carborundum rarely occurs in nature, but is commercially formed by heating carbon and silicon at very high temperatures, producing extremely strong bands of crystals. -
Whitby Dac Fossil Ammonite Group
Lower Jurassic Period, Toarcian Stage, circa 180 million years B.P.Sold for (Inc. bp): £20
Comprising four cut and polished pebble sections, each containing an ammonite fossil. 498 grams total, 63-91 mm
From Yorkshire coast. From a Lincolnshire, UK, collection.
