Authenticity Guarantee

Diamond Source NYC Guarantees Genuine Authenticity 

We are the most honest and open with you, and we guarantee 100% Genuine Authenticity of all unworn and pre-owned watches and their parts listed on this website unless otherwise is stated.

Our mission is to become the leading online source of the unworn and pre-owned luxury watch as well as new custom-made diamond jewelry to its customers all over the world. We are doing our best to maximum simplify and straighten forward your shopping experience with us.

We support our Authenticity Guarantee with No-Questions-Asked Money-Back Guarantee if any watch not found to be completely authentic.

Diamond Source NYC Inc is an independent dealer and NOT authorized by any of luxury watch brands, presented on this website (e.g. Rolex, Audemars Piguet, Patek Philippe, Hublot, Cartier, Breitling, Omega and others).

All the unworn watches listed on this website, are DE JURE pre-owned as they have named and dated warranty documentation. At the same time, DE FACTO all of them are brand new, as they have no signs of wear at all, and can even still have protective factory plastics on.

All the pre-owned watches listed on this website have been thoroughly examined and checked and/or serviced (if needed) by our in-house swiss-trained watchmakers.

The jewelry pieces listed on this website are designed and manufactured by Diamond Source NYC Inc. All diamonds used are genuine natural diamonds unless it is stated that item might have color and/or clarity enhancement done, notice about which you will see in particular jewelry piece description.

Please feel free to discuss with any aspect of our Authenticity Guarantee for any item you are interested in purchasing.

Diamond Source NYC Inc customer support hours:
Monday-Friday: 10am-6pm EST

Toll-free line: 1-888-342-9949


At Diamond Source NYC Inc we do our best to eliminate the errors in item descriptions and raise the accuracy of our products, prices, availability, etc. Anyway, we are disappointed that typographical errors, misspellings, availability and price errors may occur from time to time. We would appreciate it if you help us and let us know about the mistakes you have noticed. Please accept our apologies in advance for any inconvenience that may cause by such a type of error. Diamond Source NYC Inc keeps the right to cancel any completed transaction predicated on misinformation with no further liability.

Brand Names and Trademarks:

Diamond Source NYC Inc is an independent dealer and is neither affiliated with Rolex, USA or any other brands presented on this website nor is an authorized reseller. Rolex and any other brands presented on this website are registered trademarks of their prospective owners.