Sphinx was a renowned British costume jewelry manufacturer founded in London (in the Chiswick district) around 1948–1950 by S. Root, operating until it ceased production in the late 1990s. [1, 2, 3]
Key Milestones & History
Founding & Scale: Started in the late 1940s, the company grew into a major workshop employing around 200–300 workers at its peak. [1]