31 mars 2014
A moonstone and purple sapphire "étoile de mer" brooch, by René Boivin
A moonstone and purple sapphire "étoile de mer" brooch, by René Boivin. Photo Christie's Image Ltd 2014 Designed as a circular-cut purple sapphire starfish, enhanced with cabochon moonstones, mounted in 18k blackened gold, 2005, with French assay mark...