Exquisite

Unforgettable Custom Designs

Trust the experts. From appraisals and repairs to custom design and estate sales, we're here to help. Complete this form to schedule a consultation.

Consultation Form

Exquisite

Contact Koop Diamon Cutters

We’d love to see you in person! Find us in the historic Queen City Building, downtown Cincinnati.

Hours of Operation:
‍Monday - Friday: 8 AM - 4 PM
Holiday Saturdays: 9 AM - 1 PM

Give us a call at 513-621-2838 anytime.

Email

Send us a message today!

service@koopdiamondcutters.com

Phone

Call us for assistance

Office

214 E 8th St #4, Cincinnati, OH 45202

Exceptional

Get in Touch

Need an estimate for your insurance company? Have some estate jewelry to consign? Want to repair, restore, or redesign some heirloom pieces? Complete this form and we will contact you within 2 business days.

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Happy Customers

Hear what our customers have to say about us

"I recently cosigned a large piece of jewelry with Koop. Justin was very knowledgeable about the value of the item and market pricing. Justin is fantastic to work with and the piece I consigned sold quickly! I highly recommend Koop for cosigning jewelry or any jewelry needs you may have. Justin's professionalism and customer service is next to none!! They are a five star business all the way!!"

Tammy

"I don’t just like Koop Diamond Cutters, I LOVE them!! Quality jewelry and a friendly staff. I adore the SPARKLES of my wedding set. Justin Koop helped me design a custom pendant for my mother, for her birthday, that she never takes off. I highly recommend you check them out for your next jewelry purchase."

Kat

"We have used them for many years. Nothing like them in the city!"

Sarah

"Our family has been doing business with Koop Diamond Cutters, Inc. for over 32 years. They make beautiful top quality jewelry! Would not go any where else!!"

Michelle

"1981 - I remember the look on Mom's face when she showed me her new investment...a 150 CT topaz. Being obsessed with gems and minerals from before I could read, I was completely mesmerized...and so sad that from that moment till now it never saw the light of day. Yes, it's monstrous so this sentimental project took architectural ingenuity. Justin mastered the piece honouring the stone, my style, and intent to wear often. It was so much fun interacting with Justin and the end result is perfection. I'm so glad I was referred to Koop DC! Sincere thanks, Justin!

Rita

"They created a ring by incorporating my engagement diamond and 64 brilliant cut diamonds into a contemporary knock out ring for my 50th wedding anniversary!"

Nancy