Machine cut rhinestones are high-quality stones that are close in grade to other top-of-the-line rhinestones. Swarovski™ Rhinestones are considered to be the best, with machine cut rhinestones just a step below them in terms of brilliance and quality. Machine cut stones offer a level of shine at a fraction at the cost when compared to Swarovski™ Rhinestones. All machine cut stones are back-coated with a special silver foil to obtain optimum brilliance. Size SS20 rhinestones are sold in 10 gross packages.