Where can you sell your diamonds for good price?

Retail diamonds have a usual mark-up of ~300%. So don't expect to get over one-third of what you paid. If IGL Certified and numbered, a private sale may be your best option. Start with a professional appraisal for insurance prices (for a good piece).

Never allow someone to come to your home to buy or view the piece. Many people are set up for robberies by prospective "buyers." Meet in a public place, preferably one with security cameras.

A pawn shop will try to negotiate you down to 10 cents on the dollar if they can.

Auctions are another option, or having a jeweler broker the sale for you, but ask what the commission will be before you sign anything, and make sure you understand the terms. This would be a contract.

Another Answer

I sold my diamond ring to Fabon5th in New York. They offered me 15% more than other jewelry buying houses. The staff was professional and friendly.