Preciosa offers high quality crystal sew on rhinestones in a range of shapes, sizes and colors. Available here are chessboard faceted round (or circle) Sew On Rhinestones. The chessboard faceting offers a unique relection of light only achieved through this type of facteing. There Circle Chessboard Sew On Rhinestones have two holes for easy sewing. Preciosa crystals are made in the Czech Republic and are made of the finest quality crystal. Preciosa crystals offer illuminating sparkle and beautful faceting.