All of the diamond stones are not created equally. As with anything else price will generally dictate quality, as price goes up quality goes up. From what I understand and what I have be told Semo-hunter is correct on the dotted stones. I have tried the low price ones and there as less diamonds,that stands to reason as made made diamonds are all of equal quality and price, and the diamonds actually came off. We normally pay for what we get, so far I have found no bargains but I have found quality if you are willing to pay the price.