TAA i.3.14.4
Handwritten notes on gold found in jewellery and other items from the New Kingdom, page 4. This page includes a quote from Dr Alexander Scott on rose gold (see TAA i.3.14.9) and James Ogden's analysis of a sequin (see TAA i.3.14.19). Johnson, Matthey & Co. are also mentioned on this page.
© Griffith Institute,
University of Oxford
(4)
and using a larger quantity of the alloy
shows only 0.81 per cent of iron but this is
far more than enough to give the red colour
without any iron being supplied from an external
source.”
Mr J. R. Ogden kindly forwarded to me (May 1932) the
following analysis made by Messrs. Johnson, Matthey
& Co., of Hatton Garden, London, Sept./<May> 1932.
“One gold sequin. Diam. 1/2” approx. 3.388 grains.
Covered with rose-coloured film, both sides, part
worn from surface. 1/3rd of sequin used for analysis.
2/3rd . returned as received.”
Gold …. 95.80
Silver …. 2.60
Copper …. Nil
Iron …. 1.55
Zinc …. Nil
Loss ….. 0.05
100.00
It will be noticed that there is a considerable
difference in the proportions of iron shown in the