Wholesale Diamond and Estate Jewelry - Built on Midwestern Values Bluestone Trading Company Inc., established in northeast Ohio in 1978, is an international diamond wholesale and estate jewelry company. With our vast inventory, superior knowledge, and excellent customer service, we have built a base of dedicated clients who appreciate our quality products and honest values. 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 will 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!