Antique, delicately detailed Victorian design brooch. Beautiful, faceted amethyst center stone is accented by tiny, graduated seed pearls. Unstamped, source-tested at 14kt gold. C-clasp where it appears to be signed--IKC with a larger K. Approximate measurements: 1 1/8" x 1/2". 

Condition is superb as shown! 

Pictures taken with and without flash. From a smoke-free home.