... 5.SGS allowed Materialone grade acrylic&perspex &plexiglassTechnologycutting,grinding,polishing,laser engraving,sandblast,stickingProduct characteristic(1) high quality of acrylic material ... different sizes, Some are black acrylic base with transparent body,laser engraving image on the back or front, each part stick ... our website to search more itmes you need fantastic beautiful crystal ball