Loading, please wait...
_900x900.jpg "Large Rainbow-coloured Carborundum Crystal Display Specimen")
_200x200.jpg "Large Rainbow-coloured Carborundum Crystal Display Specimen")
.jpg "Large Rainbow-coloured Carborundum Crystal Display Specimen")
LOT 2845
Large Rainbow-coloured Carborundum Crystal Display Specimen
6 1/4 in. (1 kg, 16 cm).
A large cluster of silicon carbide showing beautiful iridescence. [No Reserve]
ProvenanceFrom the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; his collection of antiquities and natural history was formed since 1948; thence by descent.
FootnotesCarborundum rarely occurs in nature, but is commercially formed by heating carbon and silicon at very high temperatures, producing extremely strong bands of crystals.
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.
LOT 2845
Large Rainbow-coloured Carborundum Crystal Display Specimen
Sold for (Inc. bp): £33
-
Yellow Citrine Crystal Tree on Amethyst
Sold for (Inc. bp): £52
On an amethyst geode matrix; the metal branches tipped with polished citrine pebbles. 643 grams, 19 cm
From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK. -
Iridescent Pyrite with Calcite Mineral Specimen
Sold for (Inc. bp): £7
An irregular host rock with micro crystals of pyrite and calcite producing an attractive display of colours. 43 grams, 53 mm
From Abbeyton Quarry, Ballysadare, County Sligo, Ireland, October 1998. 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. -
![Mixed Crystal Mineral Specimen Collection [9]](https://timelineauctions.com/upload/images/items/small/227866-s.jpg)
Mixed Crystal Mineral Specimen Collection [9]
Sold for (Inc. bp): £33
Comprising; a mica slice; a cut amethyst geode half; an agate slice; an amethyst geode section, an agate geode section, and others. 1.26 kg total, 50-94 mm
Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
