A Victorian pietra dura oval 9ct rose gold brooch with a shell & ribbon pattern, inlaid in black onyx with an agate, tiger's eye shell & a malachite ribbon with a rose gold frame, 5.5 x 3.7 cm, Wt 17 grams
Antique malachite & gold brooch, with applied filigree grape & vine borders and gem set floral centre, marks rubbed, 1x diamond, emerald, ruby and sapphire, 4.8 cm diameter
An impressive modernist brooch with large polished malachite specimen mounted in 18ct yellow gold, 20th century, 5 cm wide, 43.5 grams total
A malachite goldfields brooch by J.W.Dunkerton, the large oval malachite plaque set within a surround of leaves and tendrils, hallmarked, in 18ct gold.