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Diamond Inclusion
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Your Private Gemologist for Unique Engagement Rings and Custom Jewelry.

Founded by David Pfaehler, G.G.; CRBN Gems is a personalized approach to buying diamonds and gemstones. Focused on finding unique engagement rings and custom jewelry; David shares his expertise by guiding his clients to find their ideal gemstone – without the intimidation of the traditional retail experience.

David holds multiple degrees from the Gemological Institute of American including GIA Graduate Gemologist and is a member of the National Association of Jewelry Appraisers. He sources jewelry from relationships built on over 15 years of experience as a Gemologist and buyer in the global manufacturing and wholesale sectors. From his time spent living and working in New York, Southern Africa, and India, David has unique access to the finest diamonds and gemstones at manufacturing costs.  Combined with his work as a private jeweler, CRBN Gems is able to provide a low-cost alternative to traditional jewelry stores.

David’s travels have given him a deep appreciation for the communities and environments that produce gemstones.  CRBN Gems is committed to ethically and sustainably sourced stones and works with clients to ensure their values are represented.

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Concierge Services

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Unique Engagement Rings

From traditional diamond to modern opal engagement rings David will guide you through making your perfect custom ring.

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Jewelry 

Concierge

With a personalized approach, David helps you find that unique piece for yourself or your loved one - whatever the occasion!

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Diamond Stud Earrings

Perfectly matched; diamond earrings are a staple of everyone's jewelry box.

Jewelry Appraiser

Appraisals

Insurance, Loss, Estate, and Charitable Appraisals.

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We serve Cincinnati and Northern Kentucky

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