Home | Shopping Basket (0) | Order Status | Customer Service | Testimonials

Free Shipping, Free Ring Sizing & 30 Day Returns
Navigation Line
Navigation Line
Navigation Line
Navigation Line
Navigation Line
Navigation Line
Navigation Line
Education Home | Shape | Cut | Color | Clarity | Carat Weight | Certification | Care
Interactive GIA Education Presentation
Diamond Certification
Before purchasing a diamond, you should expect to review a copy of its certificate as proof that it has undergone an unbiased, professional examination.
What is a Certicate?
A diamond certificate, also called a diamond grading report, diamond dossier®, or diamond quality document, is a report created by a team of gemologists. The diamond is evaluated, measured, and scrutinized using trained eyes, a jeweler’s loupe, a microscope, and other industry tools. A completed certificate includes an analysis of the diamond’s dimensions, clarity, color, polish, symmetry, and other characteristics. Many round diamonds will also include a cut grade on the report.
MDC Diamonds are Certified

Every loose diamond sold by MDC has been analyzed and graded by one of the following gem labs.

These laboratories are among the most respected laboratories in the diamond industry, and are known for their consistency and unbiased diamond grading systems. Diamonds that are accompanied by these grading reports are the most highly valued in the industry.

In addition to being graded by either the GIA or the AGS, all MDC Signature Collection diamonds are certified by EGS. This additional certification provides a second independent and authoritative analysis of your diamond. EGS also verifies that your diamond meets all of the demanding quality requirements of the MDC Signature Collection.

View While you Shop
If you are interested in a specific certified diamond offered by MDC, you can view its certificate on our site before purchase. We offer a variety of grading reports and documentation:
  • GIA Diamond Grading Report
  • GIA Diamond Dossier®
  • AGS Diamond Quality Document
  • EGS Certificate of Diamond Authenticity and Appraisal

If you are interested in a diamond and a certificate is not available for viewing on the site, simply contact a diamond and jewelry consultant at service@mdcdiamonds.com or 1-866-239-4315.


Many of our diamonds are laser inscribed with the certificate number on the girdle of the diamond, for your protection and peace of mind.

The process of using a micro-laser beam to etch a microscopic inscription onto the girdle of a diamond.

This number is only visible under magnification. All of our diamonds are shipped with their own original certificates and you can always be certain that the diamond you have is the same one described on the certificate with its matching unique number.

If a diamond is not laser inscribed you can request to have the certificate number to be inscirbed on the girdle of the diamond by contacting a diamond and jewelry consultant at service@mdcdiamonds.com or 1-866-239-4315.

MDC Diamonds NYC is an Upfront Merchant on TheFind. Click for info.   Find Mdcdiamonds.com Coupons on BeFrugal.comMDC 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.
© 2013 MDC Diamonds NYC - All Rights Reserved.