Get these Preciosa MAXIMA SS5 Flatback Czech Crystals, 144ct. at Michaels. com. Each rhinestone is glittering and crystal, has high-precision section size, multi-faced cutting, and high brightness. Preciosa MAXIMA flat back 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 to