Artist and Metalsmith Mat Citrenbaum working at his studio, BENTFORMS, in Philadelphia, PA

BENTFORMS was founded in 1994 by artist and metalsmith Mathew Citrenbaum.

It was at the Philadelphia-based creative studio that Mat honed his craft and would often experiment in a wide range of media. From custom produced jewelry for discerning clients to even inventing a bracelet bender, a tool grip and skateboard rack, for which the latter two he was awarded patents.

At BENTFORMS, Mat Citrenbaum also produced his own line of high quality production logo jewelry for the rock band CKY.

Mat continues to create new and exciting artwork and teaches jewelry-making and metalsmithing. As a teacher, Mathew Citrenbaum brings his vast experience designing jewelry to help aspiring artists develop and hone their own craft.

The Foreign Objects Sq. Rt. of Pi pendent looks amazing! Thanks again for the CKY engraved dog tag, looks better than I had imagined. I've been wearing it everyday since I got it!


I love the necklaces and ring so much. The ring fits like it was made for me and love the red in the necklace. I think I'm about ready to buy one of the bigger cky pendants… Thank you so much.

—Brittany S.

Wanted to let you know I received everything in the mail today. I was so excited. Everything is great, the RED CKY is perfect!! I can't say thank you enough.


I've had this pendant for about a year now, and it still looks as great as the day I received it. The sign of true craftsmanship lies in the life of the artist's work, and these will last a lifetime.

—Jack C.

I bought this pendant as a gift for my friend and it is absolutely beautiful. I have both the cky small pendant and the cky large pendant and they are still in perfect condition just as they were the day I got them. Mat has made them flawless, no doubt. Every CKY fan should have one of his pendants around their neck. He has made us very happy CKY fans.

—Holly S.
Pelham, Tennessee

This is a sick ring with a great deal of attention to detail. I was kept up to date with the progress of making the ring from the moment I ordered it until it was delivered to me. It was a perfect experience for an awesome piece of jewelry.

—Ricky S.

I am continually amazed by Mat's artistry and tireless attention to detail. His jewelry is flawless, but what is truly noteworthy is his patience and professionalism in seeing a project through. I would recommend anyone call Mathew Citrenbaum for their next custom jewelry project.

—Keith L.
Philadelphia, PA

Received the pendant today, and am in awe of your obvious mastery of metalwork. Stunning…beautiful…a true work of art. Suffice it to say that I am very pleased with your efforts, and will gladly direct anyone in need of quality custom jewelry your way in the future. Finally, I'd just like to thank you for your patience and professionalism in your dealings with me. Once again, I thank you for a job superbly done and look forward to dealing with you in the future.

—Chuck A.
Tuscon, Arizona

The piece is absolutely marvelous. It took my breath away. I know it will do the same to her It is, truly, a beautiful piece. Thanks, so much. I am very happy

—Dave H.
Chico, California