An art deco style necklace crafted from sterling silver featuring an oval shaped irredescent opal gemstone decorated with glimmering marcasite gemstonesopal informationnumber of stones 1stone shape ovalstone size 4mm x 3mmcarat weight 010ctnaturalcreated natural opalcountry of origin australiamarcasite informationnumber of stones 3stone shape roundstone size 120mmcarat weight 003ctnaturalcreated natural marcasitecountry of origin austria