A magnificent and rare large specimen of Alum contained in an antique glass dome

A magnificent and rare large specimen of Alum contained in an antique glass dome

1800 to 1900 Australia

Offered by Finch & Co

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A magnificent and rare large specimen of Alum contained in an antique glass dome
Mid 19th CENTURY

Size: 48cm high
Alum is a colourless astringent compound, which is a hydrated double

sulphate of aluminium and potassium. It is used in solution in dying

and tanning.


Before the advent of chemical dyes alum was an important and precious

compound used mainly for fixing dyes in leather. The large amount of

alum represented in this sample was worth a considerable sum in the

19th century and earlier.


The large size of this rare example would have taken many weeks to make, literally growing layer upon layer very gradually.


This piece was brought back here from Australia and has a label with the legend 'Alum Australia. C. 1860'
Dimensions
Height 48.00 cm (18.90 inches)
Medium
Alum
Finch & Co

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London
SW7 3DQ
England

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