SIBYL DUNLOP 1889-1968
Arts & Crafts Pendant/Brooch
Silver, opal doublet, amethyst & chalcedony
Length: 9 cm Width:7 cm  (3.5 x 2.7 in)
English. Circa 1925
Literature: cf. Jewelry & Metalwork in the Arts & Crafts Tradition,
Elyse Zorn Karlin, 1993, page 54