RK & Co. specializes in purchasing diamonds and precious colored stones (rubies, emeralds, sapphires, alexandrite, etc.) . Our GIA (Gemological Institute of America) trained gemologist has all of the necessary skills, expertise and equipment to accurately provide you with a fair price.

When making a loan against or selling diamonds or colored stones, it is crucial to bring GIA certification (for diamonds) and AGL certification (for gemstones) if available.  This will always help maximize the amount we are able to pay.

We look forward to seeing your diamonds and colored stones.


RK & Co. specializes in purchasing and making loans against engagement rings and wedding bands. Whether you have a six figure Harry Winston stunner or a more modest band, our GIA certified gemologist is ready, willing and able to meet your needs. Regardless of the size of the deal, please bring in any certification or paperwork you might have, particularly in the case of signed rings (Tiffany & Co, Cartier, Graff, Chopard, etc.).  When conducting business with RK & Co. you can rest assured that your prized possessions are safe and that your loan is completely confidential.  RK & Co. is also a great place for the public at large to purchase bridal jewelry at prices typically reserved for dealers in the trade.

On occasion, we may request that you leave your items with us for further evaluation and authentication.

Other Assets We Accept:

Our beautiful showroom location in Alpharetta is convenient to residents all over the metro area, including Atlanta, Buckhead, Buford, Canton, Cumming, Dahlonega, Dawsonville, Duluth, Dunwoody, Gainesville, Johns Creek, Milton, Roswell, Sandy Springs, Woodstock and Vinings.