Corsi Collection of Decorative Stones

view of stone 723

Corsi 723, approx. 145 x 73 x 40 mm, © Oxford University Museum of Natural History

OUMNH Number: 723  
Name and quarry location: Agata bianca antica, locality unknown  
Geological description: Part of a grey agate (colour banded quartz var. chalcedony) with an inner ‘core’ of quartz var. rock crystal, in turn enclosing pinkish chalcedony.  
Comments: It is very difficult to provenance a specimen like this; agates were found at many different locations in Europe before the discovery of abundant agate and amethyst in the basaltic lavas of Brazil, which were first brought to Europe in the 18th century.  
References: Corsi (1845) 236-238; Price (2007) 240-241  
Further information:

Corsi's classification: Class 14. Quartz and its varieties; Species 5. Agate  
Corsi's text: 138.1 Agata bianca antica  

Full entry in English

Enter some search terms
Show results as:

search tips

Searches the database for all stone records containing the words you enter. To search for a text string, put it between quotation marks. To search for stone records that don't contain a word, put a minus sign in front of it.

For example, entering: granite "coarse-grained" -Egypt will find all the coarse-grained granites that do not come from Egypt.

Terms of three characters or less have not been indexed.