Cabochon cut star sapphire completed in 18ct white gold and endowed with a 13.30ct corn flower to darkish blue coloured natural sapphire (4 ray star showing). Supplied with Aig report GEM2019091114335no indication of heat treatment. Having 66= 0.72ct of F colour, Si clarity, diamonds surrounding the sapphire. Weight:9.41grams size: N.