... occasion: hotel,home,party highest transparency ashtray toppest polish ashtray crystal ashtray, acrylic ashtray, glass ashtrayMaterial: K9Size: from 10×10cm to 25 ... highest transparency and toppest polish How to clean and maintain crystal products?Generally speaking,using soft cloth clean it is ok ... .If the dirty is worse,put crystal products in cleaning warter,then use brush.After that, ...