I bought this product after reading about it in InStyle Magazine for my new engagement ring. I used it to clean not only my ring, but also my college class ring and my mother's wedding ring which had not been cleaned in years. All rings shone and sparkled like new after the 3 minute cleaning process (twist cap until blue appears, brush onto ring, rinse with water, dry). My mother was thrilled with how this made her ring look! I could not be more pleased with this product. Especially given the price, there is literally no reason why you should not just purchase this now!