What do the experts/professionals think. An appraiser who has done this type of work for 15 years has told me to stay away from internet Superideal branded diamonds. I showed him details of the site of some diamonds and he says any diamond with a thin girdle is a disaster waiting to happen even if it is just on a small section. He said Medium to Slightly Thick is what he advises all his clients. He is a very highend appraiser who has some celebrity clients.