34 Carats of Beautiful, All Genuine Black Onyx Gemstones. Various Shapes & Sizes. Shapes Include: Oval, Marquise, Pear, Cabochon, Flat Cut, Rectangular, & Round. Sizes Include: Biggest 21mm x 11mm & Smallest is 3mm Round. Thickness Range From 1.4mm to 8mm. 25 Pieces Totaling 34 Carats!!! Ritz Jewelers, Los Angeles. FREE SHIPPING!!!