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Hello Can someone recommend a Diamond Paste to remove scratches from an Acrylic, Mineral and / or Sapphire crystal? I see various sellers on Ebay and Amazon, however I wonder if anyone in the group can specifically recommend a brand or reply with a link to the product used. Thanks in advance for any help that can be provided. Michael

Any advice out there for cleaning/polishing watch crystal glass? I know there are videos upon videos on howto clean acrylic watch crystal glass using toothpaste, Cape Cod cloths, an old toothbrush, etc. However, I am trying to get a number of scratches out of a watch crystal I have taken the movement out of. It is for me a "tester". I am fairly sure that this "tester" watch crystal is glass. I have sandpaper (wet/dry) and I have a Cape Cod cloth which I have just started using. I think you can see the scratches in question in the pics. So, what I have done so far is use 400-grit sandpaper to scrub across the grain of the scratches. I have also tried scrubbing in a circular motion. Maybe I am just not very persistent at this. I scrubbed for some time. But all I can see is that NOTHING is disappearing, and the only thing that IS happening is that now the whole glass is covered in a new set of sandpaper-made marks. Maybe I can use the Cape Cod cloth to get these out. Maybe I can use the other 1500-grit sandpaper to smooth things out too. This process looks so easy in the various Youtube videos. yes, I know these things can take time, but HOW LONG?? This is NOT one of the fun sides of watch repair that I am looking forward to doing now or, in fact, any time. I really thought that it would be the case that - scratches and marks on the crystal? No problem! I can get them out! :) But perhaps I was naive (?) How long should I be scrubbing with the sandpaper? Is 400-grit not enough? Should I get more coarse sandpaper?

Howdy to all. Its amazing to see how this forum is flourishing exponentially. Mark deserves a lot of credit for pulling this together :thumbsu: I need some help with restoring a mineral glass. I believe it is possible to polish a mineral glass by removing the scratches. I have never tried it myself but would love to give it a go. I understand that its just not worth investing so much time polishing it esp if its a round glass which costs only couple of dollars. However, it might be worth for some odd shaped glasses. Have any of you guys performed that before? I would love to hear all the different approaches. Thanks a lot in advance Ash (NZ)