Mark’s journey into fine jewelry began in Napa, California, and has spanned over four decades, continuing to this day in the charming city of Klamath Falls, Oregon.

"At the age of 14, I was strolling across my middle school campus and a voice in my head said “someday you are going to be a Jeweler”. At nineteen I found myself running a bead store in Santa Cruz, California. I could not stop from visiting the local jewelry stores (especially the one or two who actually made jewelry) and staring carefully at all the details of the work. I spent any other spare time looking up all of the jewelry making and design books at the Santa Cruz library I could find to read. The process and challenge of jewelry captured my attention and my imagination."

Mark London, Klamath Falls, 2015


1973: Harlequin Original Jewelry Designs opened in the newly erected Grape Yard Shopping Center in Napa, California where Mark’s signature design style began to grow and evolve.

1980: Mark receives his Gemologist Diploma from the Gemological Institute of America (GIA).

1983: Mark is awarded the title of Graduate Gemologist Appraiser from the Accredited Gemologists Association (AGA).

1989: Mark  wins first prize in the Lazare Kaplan International Diamond Design Contest for his simply sculpted solitaire diamond ring, which became known as the Harlequin Ring.

2002: Mark relocates to Klamath Falls and establishes Mark London Design, a custom jewelry studio catering to West coast clientele. 

 2017 Finds us working out of our design studio in downtown Klamath Falls. Bringing clients' dreams to life is what motivates us, we look forward to sharing this creative process with you!