[QUALITY MATERIAL]: Our 200 ml Earthen clay Glasses are made of 100% Organic & Natural, Zero use of chemicals and paints that imparts uniform reddish color to the finished product. Clay Glass/Earthen Glasses are handmade clay serve ware which is absolutely safe, Non toxic, Unglazed, no artificial colors are used, Eco-Friendly to our environment and most importantly it is non ceramic which makes this Glass an absolute healthy material.