A silver foliate circular brooch

A silver foliate circular brooch, centred with a carved carnelian intaglio, depicting the profile of a bearded man wearing a laurel wreath and set with two smaller carved hardstone cameos and various coloured stones. 4.5cm wide. A late 18th century gold fob seal, with foliate shell decoration and carnelian matrix engraved with initials, with a small gold swivel clip. A 19th century well carved lava cameo depicting the profile of a bearded gentleman in the Renaissance manner, possibly Leonardo, gold frame. 5cm high. A filigree gilt metal vinaigrette suspending pearls and cabochon pink stones with a short gold link and cabochon pink stone mounted chain, the pink stones probably tourmalines, the vinaigrette 4cm wide. And a pair of gold slide-locking decorative tweezers.