Give a September birthday gift that doesn't just look good but has meaning too with these stud earrings that display the September birthstone of sapphire. Made from 9ct yellow gold with a 375 metal mark and a face size of 7.5mm x 5mm, these teardrop-shaped studs each feature a genuine sapphire gemstone. Weighing just less than half a gram and with a front to back size of 11mm, these studs have a pin width of 0.65mm and butterfly back fastenings.