ARTIFICERS’ GUILD 1901-1942 Attrib.
Arts & Crafts Brooch 
Silver, ruby & pearl
Length: 1.8 cm (0.7 in) Width: 3.7 cm (1.4 in)
British. Circa 1910
Fitted case
Literature: cf. Jewelry & Metalwork in the Arts & Crafts Tradition, Elyse Zorn Karlin, 1993
Designers for the Artificers' Guild included:
John Houghton Bonnor, John Paul Cooper, Edward Spencer & Henry Wilson