Victorian Diamond & Ruby "Swallow & Olive Branch" Pocket Watch collars The unusually formed halo is

The unusually formed halo is (vaguely) reminiscent of a flower

Russian silver marks

and modelled in 9 karat gold with maker's mark for the esteemed Charles Green & Son

18k stamp (later added)

Victorian Diamond & Ruby "Swallow & Olive Branch" Pocket Watch collars The unusually formed halo isDATE: Victorian, c. 1900 A beautiful Swiss pocket watch featuring a gem set swallow with olive branch on the front case within a wonderfully chased orange blossom border. The bird is studded with rose cut diamonds, and the two olives are set with a ruby and a diamond. It's crafted in 14 karat gold, with simple, elegant numerals on the white watch face, and ornate openworked hands. The Swiss hallmarks (two squirrels) indicate it was produced for export