558 An 18ct white gold diamond set filigree dress ring with open faced marquise shaped top mount, stamped “750” , [Diamond & Gemstone Bourse (Aust.) insurance valuation $8,200] $2,000–3,000 559 An unusual 18ct white gold and diamond dress ring in the form of a spider, with polished French glass backing and titanium border mounted with brilliant cut diamonds, [Diamond & Gemstone Bourse (Aust.) insurance valuation $4,895], $1,500–2,500 560 A 14ct white gold Art Deco style ring with elongated marquise shaped top mount featuring black onyx background, [Diamond & Gemstone Bourse (Aust.) insurance valuation $4,150] $1,500–2,500 561 French millegrain edged platinum Art Deco bracelet comprising nine open centered links surrounded by brilliant and double cut diamonds of a total estimated weight of 4.5ct (clarity VS-SI), 18.2 grams, [Diamond & Gemstone Bourse (Aust.) insurance valuation $15,500] $4,000–6,000 558 559 560 561 103