Jacinda: 0.75ct 6mm Heart cut Simulated Blue Sapphire Chain Pendant 925 Sterling Silver, 1129 A beautiful pendant featuring a 6mm, 0.75ct Heart cut Simulated Blue Sapphire Gemstones Also features an 18 inch curb chain that accents the stone perfectly! Made with solid 925 Sterling Silver. The approximate size of the pendant is approx. 12mm in height by 6.5mm in width.