Includes 10 different gemstones 9 x 9mm Cushion Cut stones. Back open ups to pop in the stone of your choice. Herringbone is 4.5mm 18" Paperclip is 22" extended to 24" or shortened to 18". Synthetic Gemstones, Amethyst, Aqua Marine, Blue Sapphire, Diamond, Emerald, Morganite, Peridot, Pink Sapphire, Ruby, and Yellow Diamond. Silver Finished Stainless or 18k Gold Plate Stainless.