TechDiamondTools Diamond Polishing Compound Polishing Paste 14,000 Grit 0-1 Microns for Marble Glass Metal Rock Jewelry Resin Silver Chrome Gemstone with High Concentration of Diamond Powder USA Made

This paste (14,000 grit) does wonder to my straight edge razor after the 10,000 grit stone (using flat leather strop). I might still get the 50,000 grit to get a perfect edge, but it's already close to being "as new".

For i phone screen

Yes. It a very good product. Able to remove the scratches easily.

Would recommend

Works well, polished 14c with ease. Came out of the tube a little too easy so be careful it's easy to waste.