18ct gold & silver set Art Nouveau Diamond Opal Pendant/Brooch dated circa 1900 Five round opals with an articulated pear shaped opal drop, very well matched with lively play of colours and iridescence in reds, greens, blues and gold. Set in 18 carat yellow gold claw collets Two main transitional cut (old mine) diamonds 0.70ct. Mix of old mine and rose cut diamonds in an 18 carat yellow gold with “silver Set” channel setting , approx 1 ct total. G/H/I, VS2-SI2. Total diamond weight: approx…