| These spectacles date from the mid-1930s. They are made from tortoiseshell, a rare and difficult material to work with. Tortoises are now an endangered species but at the time these glasses were made, their shells were very popular for spectacles. The frames were cut from a single piece of shell. For manufacture, the plates of which a tortoise's shell is made up are removed, then laminated together to get a block to cut from. This block is then boiled in cottonseed oil to make the material pliable, and then stretched out onto dowels. When set, the tortoiseshell can be cut into a desired shape. |
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| "Noseguard" by Oliver Goldsmith, 1970. |
All text and images sourced from the Victoria & Albert Museum in London.









