This angular, art-deco inspired flat back rhombus shape stone from Preciosa Crystal opens up a world of geometric design possibilities. Produced with Preciosa's MAXIMA premium quality lead-free Czech crystal, these stones are manufactured in accordance with the highest environmental and sustainable practices. With less than 90ppm of lead and barium, these stones conform to the following world standards: ASTM F2923-11, ASTM F963-11, CPSC 16 CFR 1303, CPSIA, Directive 209/48EU, OEKO-TEX Standard 100 and more. They also feature the highly durable coatings, superior size consistency, and precise cuts that Preciosa Crystal is known for.