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Live Chat Support
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Call: 866-239-4315

10:00AM-7:00PM (ET)

10:00AM-4:00PM (ET)

or E-mail:
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Contact Us:

We welcome your questions and feedback. Feel free to contact us using any of the methods below.

Our diamond and jewelry consultants have the knowledge to help you make the right decision, and most calls are answered in ten seconds.

US, Canadian Customers:      1-866-239-4315

UK Customers:      0-800-520-0448

All Other Countries:              1-212-840-1417

Email Us:

We typically respond to customer e-mails within one business day. Send us your question in the form below, or send an e-mail:
US customers: service@mdcdiamonds.com
Canadian customers: service@mdcdiamonds.ca

UK Customers: service@mdcdiamonds.co.uk 

Live chat with our experts:
WhatsApp or Text +1-347-770-1518

Business hours: (all times are Eastern)

Monday through Thursday
10:00 AM to 7:00 PM

10:00 AM to 4:00 PM

Saturday and Sunday

If you have any other questions, please do not hesitate to contact one of our diamond and jewelry consultants in person at service@mdcdiamonds.com or 866-239-4315.



Education and Guidance
View our education section for helpful information on more than just the 4 Cs.
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Your options are limitless.  Phone a Diamond and Jewelry Consultant to create the ring or jewelry of your dreams.
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Very reputable jeweler.

Very reputable jeweler. My husband purchased an engagement ring from MDC Diamonds 17 years ago (this was the largest online purchase he had ever made) with fingers crossed that it was everything it was advertised. He had it appraised at two different high-end jewelers in Boca Raton, FL. Both jewelers stated he received exactly what was advertised, and thought the price he paid was superb. We upgraded my wedding band 7 years ago and shipped my engagement ring to NY to ensure a good fit. The rings came back looking as if they were a set, just perfect. This year, I lost a diamond in one of my rings, so I contacted MDC Diamonds and they came to the rescue, AGAIN. In the middle of the Christmas rush, they took great care of us again. My rings still look absolutely fabulous and look brand new. It says a lot to be able to trust a company long distance with such valuable assets, but I can attest that MDC Diamonds is one of those rare gems!!
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Read what customers have to say about their MDC Diamonds shopping experience.
Very reputable jeweler.
Very reputable jeweler. My husband purchased an engagement ring from MDC Diamonds 17 years ago (this...
Marin G
Jupiter, FL
December 30, 2020

MDC Diamonds International Inc is a BBB Accredited Business. Click for the BBB Business Review of this Jewelers - Retail in New York NY
Русский | Español | 한국의 | New York
Customer Service Address: 580 Fifth Avenue Suite 349, New York, NY 10036
Corporate Address: Manhattan, New York, NY
We welcome visitors to our New York office. Office visits are by appointment only. Please contact our Customer Service center to schedule an appointment.
© 2017 MDC Diamonds NYC - All Rights Reserved.