Wholesale Diamond & Estate Jewelry Experts

RB Grampp Sr. founded Bluestone Trading Company Inc. in 1978. On the back of his motorcycle riding in the hustle and bustle of Cleveland Ohio, he seized the opportunity to enter the quickly escalating gold industry. Once RB firmly established himself in the gold industry, it was only natural to progress into the international diamond market. As a family run company, RB worked hard to instill his Midwestern values into his company and into his children. So when RB Grampp Jr. decided to join his father, it was no surprise that he continued to carry on his father’s principles of hard work, honesty, and integrity.

Times have changed, and so have we, by offering our no-cost memo services, free overnight shipping, same day wire service, and overnight check payments. New to Bluestone Trading is our “No Cost To You” buying software for consigned diamonds and jewelry, where we evaluate and make an offer on goods sent in from your customers. While times have changed, one thing hasn’t changed, and that’s the principles on which Bluestone Trading was founded.

The hard work, honesty, and integrity on which this company was built is present in all of our staff. We are a family, and we treat our clients like family. Our educated and diverse staff can cater to your needs with our large inventory of diamonds, studs, and estate jewelry. You can rest assured that Bluestone Trading has what you need.


Bluestone Trading is happy to be your diamond and estate jewelry experts. We are known for our aggressive purchasing, top dollar offers and same day payments. There is a reason we have been in business over fourty years. We have the knowledge, expertise and capitol to give you the strongest offer possible. 

We offer a large assortment of melee, loose diamonds, estate jewelry, and studs. With our inventory constantly evolving, you can be sure that Bluestone Trading has what you need.

Bluestone Trading Company offers free consultations on diamond and estate jewelry selling, buying, and re-cuts. Give us a call at 1.888.800.BLUE or send an email to We’re happy to help guide you through the process!”


We'd Love to Hear from You!

Not a fan of forms? You can give us a call at 1.888.800.BLUE or email us at


"Robert & Gabriel Jewelers in Cleveland, Ohio has been doing business with Bluestone Trading Company for over 35 years. We have found them to be a valuable rseource for buying and selling diamonds of all sizes, shapes and qualities as well as finished estate jewelry. The Grampp family is honest and very trustworthy. They have always been professional in all of our business transactions.

Bruce Botnick

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