thought I should share my experience here. I have received yesterday "Grit 320-10000 W0.5-W40 Diamond Abrasive Paste Needle Tube Grinding Polishing Lapping Compound Glass Metal Tool Micron Tool" I have purchased from Aliexpress . cost is under $1 and free delivery (no idea how economy works there) But I have tested paste last night and so happy with result. have polished big silver brooch I am making. great polishing.... also was good on some stones too! so hope this will be of use to some of you!