A BLACK OPAL AND GEM-SET NECKLACE AND EARRING SET (2)A BLACK OPAL AND GEM-SET NECKLACE AND EARRING SETComprising a necklace, designed as a series of five black opal plaques, each within a floral shaped surround set with round brilliant-cut diamonds, highlighted by circular-cut tsavorite garnets, spaced by bezel-set cabochon sapphire and diamond set flowers, enhanced by collet-set sapphires to the back chain of similar motif; and a pair of earrings en suite; estimated total opal, sapphire, tsavorite garnet and diamond weight 53.55, 11.80, 4.05 and 10.18 carats respectively; necklace length 43.0cm; earring length 5.8cm (2)Accompanied by a GIA report stating that the centre stone is a natural opal top doublet with ironstone matrix back, displaying play of colour. Report #2336437598, dated 13 August 2019.天然蛋白石配藍寶石,沙弗萊石及鑽石項鍊及耳環套裝蛋白石,藍寶石,沙弗萊石及鑽石分別共重約53.55,11.80,4.05及10.18克拉,項鍊長度約43.0厘米,附GIA證書