Welcome to M&G Signed Jewelry. We have been in business for more than 30 years in our Midtown Manhattan location and have developed a reputation as an industry leader in brand name and estate jewelry. Our exceptional collection is mainly known for its splendid estate pieces from world-renown designers such as Buccellati, Bulgari, Chopard, Graff, David Webb, Kieselstein-Cord, Mikimoto, Tiffany & Co, Van Cleef & Arpels, and many more. With an eye for elegant craftsmanship and an established presence in the collectors market, we are able to offer you some of the rarest high-end jewelry available on the market today.

Jewelry Sales

  • We purchase and exchange unwanted jewelry
  • We are licensed to buy gold

Jewelry Customization

  • Many of our rings can be resized. Re-sizing options and estimated fees are provided when available.
  • Many of our pieces can be customized to your requests. Please contact us with your inquiry for quote estimations.
  • Any jewelry modifications, including ring sizing, may become subject to a non-refund policy.


  • We guarantee 100% authenticity on every piece.
  • For insurance purposes, we can provide an appraisal upon request.
  • An independent appraisal will cost an additional $50.

Special Orders

  • We welcome special order requests and we’ll always take an extra step to help you find the jewelry of your dreams.