A late Victorian diamond target brooch

A late Victorian diamond target brooch, the brooch comprising an old brilliant-cut diamond centre, estimated to weigh 1.90 carats, to the centre of a cluster surround of twelve uniform old brilliant-cut diamonds, all within a border of sixteen old brilliant-cut diamonds alternating in size, all estimated to weigh a further 4.80 carats in total, all silver cutdown collet-set to a yellow gold mount, with diamond-set pendant loop and detachable brooch fitting, circa 1890, gross weight 12 grams

No. 22900M