Skip to content

Please be aware that some material may contain words, descriptions or illustrations which will not reflect current scientific understanding and may be considered in today's context inaccurate, unethical, offensive or distressing.


The authors write: 'Although there are many qualitative analyses of pearls, from our being unable, in their voluminous literature, to find any evidence of a quantitative analysis of their ingredients having been recorded, we undertook the examination of several varieties, of which the following is an account:— 1st. As regards oyster pearls. Of these three varieties were examined, British, Australian, and Ceylonese. The qualitative analyses showed that they all had an identical composition, and that they consisted solely of water, organic matter, and calcium carbonate.'

Annotations in pencil and ink.

Subject: Chemistry

Received 23 February 1888. Read 22 March 1888.

A version of this paper was published in volume 43 of the Proceedings of the Royal Society as 'The chemical composition of pearls'.

Reference number
Earliest possible date
Physical description
Ink and graphite pencil on paper
Page extent
9 pages

Creator name

George Harley

View page for George Harley

Use this record


George Harley, Paper, 'The chemical composition of pearls' by George Harley and Harald S Harley, 1888, PP/11/33, The Royal Society Archives, London,, accessed on 18 June 2024

Link to this record

Embed this record

<iframe src="" title="Paper, 'The chemical composition of pearls' by George Harley and Harald S Harley" allow="fullscreen" frameborder="0" width="100%" height="500px"></iframe>

Related Publications


This item is part of:

Related Fellows

Explore the collection

  • Proceedings Papers

    Dates: 1882 - 1894

    The archival collection known as 'Proceedings Papers' is comprised of manuscripts and occasional proofs of scientific papers sent to the Royal Society which were read before meetings of Fellows and printed in full in the Proceedings of the Royal Society.

    View collection