Large etched prism cube ice mould. *The Prism Ice Cube creates a single 5cm (2") cube inspired by swanky speakeasy cocktails, intricately etched with tiny pyramids all over to instantly dress up your beverage of choice. *Melts slowly for minimal dilution to chill your drink with a clean-finish taste. *Made from food-grade silicone, this ice tray is BPA-free, dishwasher safe and designed to keep out freezer-flavours.