I went there to ask them to set my diamond to my setting.
They mentioned the setting was too big for my diamond though we prepared our staff based on our research. Actually, we purchased our diamond and setting thru web site. They said " Web site?" and we left that place disappointedly. We went to another place and they said there was no safety issue and set our stone perfectly within an hour. Of course, we have not had any problem so far.
I have to say they were not interested in customers who already prepared materials. Most web sites sound like they are very professional and I am not against it at all, but only thing I can say is they were not telling true story to me.
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