A diamond and rock crystal bow brooch, circa 1900, and a diamond bar brooch

A diamond and rock crystal bow brooch, circa 1900, and a diamond bar brooch
1st: Designed as a rock crystal bow accented by brilliant, old brilliant and single-cut diamonds, with a similarly-cut diamond cluster to the centre, mounted in silver and gold, 2nd: The knifewire bar centrally-set with a trio of brilliant and old brilliant-cut diamonds, between millegrain-set single-cut diamond shoulders, diamonds approx. 1.75cts total, 1st with Austrian assay mark and later brooch fitting, lengths: 1st 3.8cm, 2nd 5.7cm (2)