Antique Victorian Ruby Diamond Horseshoe Silver-Over-18k-Gold Pendant

Era: Victorian
Origin: European (likely English or French)
Material: silver over 18k gold
Gemstones: old mine cut diamonds and rubies
Dimensions: 1" x 1 1/8" 
Weight:  6.9 grams
Circa: 1880–1900

Conversion from brooch; dual loops for versatile styling