An amethyst, diamond, and platinum pendant brooch designed as a rectangular cut-corner amethyst measuring approximately 25mm x 20.8mm x 13.8mm, framed by old mine-cut diamond garland, on later chain; estimated total diamond weight: 7.70 carats. Brooch Length: 1 3/4 in.; Brooch Width: 1 1/2 in.; Chain Length: 19 1/2 in.