Our Opal glass dinnerware products are milk white light, heat, shock resistance, suitable for microwave and dishwasher use. FW45 Rice Bowl 4.5′DW80 Rice Bowl 8'Opal Tempered Glass Dinnerware Milky Whiteness Brightness Hardness Heat-resistance Non-poisonous, Anti-corrosion and Suitable For Microwave Use and Mechanical Strength Cleaning. Opal Glassware bowl