Diamond Buying & Consignment Sales

Sell your Diamond: When you think "I want to sell my diamond", think, Sydney Rosen Company. Diamonds are among the few personal assets that can be easily turned into cash. Sydney Rosen is one of the largest and most respected diamond buyers in the Philadelphia area. Generally, we look for diamonds that meet our inventory needs and those of our many wholesale accounts. Round diamonds of better quality are most in demand, but all shapes, sizes and qualities may be considered. If an agreement is made, we’ll write you a check on the spot. If you’d like us to purchase your diamond outright, we recommend that you contact us first.

Consignment: When you think "I want to consign my diamond", think, Sydney Rosen Company. Consignment is when you  leave your diamond with us to sell for you. When diamonds are left for consignment, the transaction is more orderly and generally yields a considerably higher price to the consignor rather than an immediate liquidation price that comes with on the spot cash offers.  The exact amount to be received will be agreed upon right up front.  Upon resale the consignor will receive payment within 30 days.   Consignment sales may take slightly longer however, it allows us to secure the best possible price for you. The more desirable your diamond, the faster it will sell.  Sydney Rosen Company is the leading consignment seller in the Philadelphia area.

When you leave your diamond with us for consignment, we examine it in front of you and you’ll receive a detailed receipt and description of your diamond for absolute

To learn more about our services, visit our showroom, call us toll-free at 215-922-3500,
or email


David, Steven, and Jacob Rosen are tested and Certified Gemologist Appraisers. Together with our staff of trained GIA Graduate Gemologists, we offer expert professional appraisals for insurance purposes.  

As members of the American Society of Appraisers and the American Gem Society you can be assured of the highest level of professionalism. Our appraisals adhere to the Uniform Standards of Professional Appraisal Practice (USPAP) as promulgated by The Appraisal Foundation.

At this time Appraisals are only being done to determine Retail Replacement Value for Insurance purposes and are done by appointment. For more information about our procedures or fees for verbal consulation and written documentation, or to arrange an appointment, please call 215-922-3500.  

David Rosen, GG, GIA, ASA, Master Gemologist Appraiser®, Member, American Gem Society, CGA
Steven Rosen, GG, GIA, ISA,
Jacob Rosen, GG, GIA, CGA 
Sydney Rosen Company
Proud Members of the American Gem Society