It is so sad that there are jewelers out there looking to screw people over. I had something similar happen to me, fiancee bought a ring from a family friend jeweler across the country, I didn’t like the setting so we had it changed & paid a little more for it. Took it to get it appraised & there were cubic zirconia stones in the halo! UGH! Ok if that’s what you agreed you were paying for, NOT ok if you were under the presumption you were getting a very high quality diamond ring. Not to scare you, but we had a pretty hard time getting our money back! But we finally did after we made the jeweler realize that just because we were a few states away, didn’t mean we couldn’t really harm his business with bad advertising if he chose not to refund our money. We had to sign a stupid agreement though saying we wouldn’t talk trash about his jewelry store if he gave us our money back. What a scumbag!!!
How did you or he pay for the diamond? If it was with a credit card, call you credit card company ASAP and file a merchant dispute on the charge! This was about the only thing that would have saved us if the jeweler hadn’t chosen to refund our money. It’s a pain in the rear because you have to gather a bunch of evidence & write up a story, but the credit card companies always have their customer’s best interests in mind, so they will try hard to get your money back for you. They do have deadlines on how far out you can do a dispute however, so if you paid for it with a credit card, get on it right away. You can always call (like I ended up doing) and say the merchant already refunded my money & you can close the dispute.
If you didn’t pay with a credit card, it gets a little trickier. If they are uncooperative, definitely use the technique that PP said, threaten them with bad advertising. You can call the Better Business Bureau, threaten to put an ad in the paper about what they did to you, etc.
One last VERY important thing: Be firm with them, but seriously, maintain YOUR professionalism. I know it is super easy to go off on tangents & yell & curse at them, but it is so important that you be firm, but don’t act like a child. That is one thing that my fiancee did that helped us get our money back, approached it as a strict business ordeal and was very firm with the jeweler, but never once yelled or cursed at him. That helped us convince the jeweler to give us our money back–it was a straight cut & dry, “Hey, you did this to us, if you don’t give us our money back, just know we are capable of having a strong negative impact on your company.” The jeweler was very argumentative, but my fiancee never once stooped down to his level. Hopefully it won’t turn into a legal matter, but if it does, if you maintain professionalism & keep your temper in check, this can definitely help you out in terms of winning any type of legal ordeal. Plus, if you do have to resort to bad advertising, the jeweler can’t come back & say “Well this customer just cursed & yelled at me & of course I wasn’t willing to work with someone like that.” Etc. Etc. I know it is very very tough to do, but this is why I let my fiancee do all of the talking on the phone, he is able to maintain his emotions & temper very well. Me–not so much. Haha!
Best of luck to you! I know it is so very stressful, and it is hard to believe that there are preople out there who would knowingly screw people over, espeically when it is involving something so personal and expensive as your wedding rings! Try to hang in there & keep faith that something will work out! And when it does, you can still get a beautiful stone, it will just be delayed a little while longer.