hi I'm Shari Burks from cool diamonds in London Hatton Garden and I'm a goldsmith here and I've been a goldsmith for nearly 10 years and I trained for that in Australia predominantly we sell diamonds mounted in platinum 18 karat white gold in 18 karat yellow gold I'm here to demonstrate polishing and resizing of rings and diamond jewelry you can do this at home by also having yourself a bath of warm water dish detergent and Clarry ammonia and you will just soak that just degrees it using a toothbrush get into any gaps where they might be dirt or whatever give it a good rinse in warm water dry it with a soft cotton clothing in you can actually by ultrasonics as well for home use and then we'll get a polishing cloth which replicates the polishing process which I just showed you and you just rub over that in the one direction takes a little while to do but it does come up and that's how you polish sterling silver jewelry