Mosaic Chandeliers are made of original color glass. Metal part is made of high quality brass so there will be no color change on glass part and no oxidation on brass part. It works with either 110V and 220V. PLEASE NOTICE: We use "BRASS" NOT cheap iron on our products and also we use high quality electrical equipment which has UL / CE certificates. In case of out of stock, it will take 2-4 weeks to make new one(s).