Delightful .....Pink Tourmaline Ear Studs in 14 karat white gold. Prong set Round Brilliant Cuts measuring 4.00 m.m. ( 5/16 " ) each. Tourmaline weighing 0.63 Carat total. Screw down posts and backs. Stamped on screw backs " 14K S ". Tourmaline from Brazil.