Thank you for your excellant advice and support to help restore our new marble bathroom. The damaged etched areas around the shower from the accidental use of acid detergent to remove excess silicone when the shower screen was installed was successfully removed using Dia-Glo. We also used some for the walls to remove the smear marks from the excess aqua sealent. I resealed the shower with Lithofin which i feel is by far the better sealer and gives a nice finished look to the marble and now everything is looking very smart indeed. We will enjoy using our bathroom and keep it well protected and looking its best using your products and ongoing support.