A beautifully designed art deco style brooch with a central opal and decorated with marcasite gemstonesopal informationnumber of stones 1stone shape roundstone size 3mmcarat weight 007ctnaturalcreated natural opalcountry of origin australiamarcasite informationnumber of stones 14stone shape roundstone size 6 x 140mm 8 x 120mmcarat weight 021ctnaturalcreated natural marcasitecountry of origin austria