- Our Family History and Mission -



Koop Diamond Cutters began its business venture in 1966, founded by Clarence “Whitey” Koop. Whitey started the business solely cutting diamonds until his son Butch began adding his artistic flair creating Custom Koop jewelry pieces on an individual basis. Expanding their venture, Butch started the Cincinnati Casting Company in 1974 as a separate entity, further pushing the manufacturing side of the business. Those relationships that were established through Cincinnati Casting serve as the solid foundation of the family owned business today. Both the cutting and manufacturing sides of the business were successfully operated under one roof for several years before the decision was made to incorporate the businesses together. Through the years a third generation has expanded Koop Diamond Cutters, Inc. in to a full manufacturing plant and retailing center for fine jewelry needs of any design capacity.

Yesteryears journeys have developed the passion seen today through Koop Custom jewelry pieces created by Butch and sons Justin and Elliot Koop. It is an evolution that starts with a creative conceptual meeting, and leads to the jewelry art design process involving sketches and computer-aided technologies of the design, analysis and manufacture of the jewelry (CAD/CAM). Koop Diamond Cutters, Inc. continues to evolve its business by embracing the powers of this CAD/CAM technology. The Matrix software allows Koop to replicate, change and design new 3D jewelry on screen while generating a detailed color preview image that can be printed or emailed to the customer. Matrix outputs all file types generating dimensionally accurate wax models, which finally unveil a precise piece of jewelry through casting, setting and polishing. The result is an exclusive piece of Koop Custom jewelry.

The Koop Family

Butch Koop  -  President

- 40 year Diamantaire and Master Jeweler

Justin Koop  -  Vice President

  1. -Graduate Gemologist, Gemological Institute of America, Carlsbad, CA

  2. -Accredited Jewelry Professional, Gemological Institute of America, Carlsbad, CA

Elliot Koop  -  CAD/CAM Technologist - Shop Manager

- B.S.B.A (Information Systems), Xavier University, Cincinnati, OH

- Accredited Jewelry Professional, Gemological Institute of America, Carlsbad, CA

  1. -Colored Stones Certification, Gemological Institute of America, Carlsbad, CA

- Certified in Gemvision Matrix and Counter Sketch Studio

Koop Diamond Cutters 1984 Documentary

Our Mission

The mission of Koop Diamond Cutters is to provide customers with the highest quality product and service at the most competitive prices for all custom, wholesale and retail jewelry needs. Koop remains progressive with the latest technologies as utilized with their Interactive Custom Design System (ICDS).

The Koop family incorporates their family heritage and values into the craftsmanship of their service and jewelry, working as a team to ensure a meaningful and unique piece of jewelry to be presented as a family heirloom for future generations.


Our Location

You'll find us located in Downtown Cincinnati just minutes from Interstates 71, 75, 74 and 471 in the historic and beautiful Queen City Building.

Parking is located along 8th Street and directly across the street in the 8th Street Parking Lot.

For further questions about directions, feel free to call us Monday thru Friday 8 A.M. till 4 P.M.

Koop Diamond Cutters, Inc.

214 East Eight Street, Cincinnati, OH 45202

Phone: (513) 621-2838

Hours: Monday thru Friday 8 a.m. - 4 p.m.

We offer appointments on select Saturdays only.

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