Preciosa MAXIMA flat back Hotfix rhinestones bulk are made in Czech Republic. MAXIMA Crystals by Preciosa is Preciosa's premium line of rhinestones. Preciosa is a world-leading producer of cut crystal, specializing mainly in the production of machine-cut chatons, beads, and other fashion jewelry stones of top quality and in a broad variety of shapes, colors and sizes. These rhinestones are made of high-quality crystal glass. Each rhinestone is glittering and crystal, has high-precision section size, multi-faced cutting, and high brightness.Details:Available in assorted colors4 mm (SS16)144 piecesFlat backCrystal glass