Basalt is a black porcelain collection that mimics slate stone and it's one of Revol's best sellers. It is much better than slate: it won't scratch, absorbs neither fat nor odors (basalt is 100% non-porous) and is resistant to chipping. The pieces are food friendly – they are cadmium and lead free. Made to last, this collection is specifically hyper-resistant to thermal and mechanical shock. Suitable for salads, soups, side dishes (mashed potatoes, rice, vegetables…). Oven, microwave (572F), freezer and dishwasher safe. MADE TO LAST: Hyper-resistant to thermal and mechanical shock – oven and microwave save. MULTIPLE USE: suitable for all salts, peppers, spices and herbs. EASY CARE – dishwasher safe. You will be surprised by how much you can do with it!