Diamond Inventory Search

Richter & Phillips Jewelers has largest selection of loose diamonds in the Midwest, sourced from the worlds most trusted diamond partners.
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Browse & Compare GIA Certified Loose Diamonds

Our interactive Diamond Inventory Search lets you explore thousands of certified diamonds by shape, carat weight, color, clarity, cut, and price. Whether you’re designing an engagement ring, upgrading your jewelry, or selecting a timeless gift, you can compare stones side by side and filter to match your style and budget.

Every stone under our diamond search comes from trusted sources. It is backed by grading reports from GIA or AGS, including the National Diamond Grading Report, Grading Report, Additional Grading Information, Proportions, Clarity Characteristics, and Grading Scales, as detailed in the reports.

Use Our Diamond Inventory Search Tool To:

  • Compare thousands of loose, certified diamonds instantly.
  • Filter by shape, cut, clarity, color, carat, and price.
  • View high-resolution images and 360° videos where available.
  • Save your favorites to review or share with a partner.
  • Pair your diamond with a handcrafted engagement ring setting.

Cincinnati's Trusted Diamond Experts

Richter & Phillips downtown Cincinnati showroom has the Midwest's largest collection of loose diamonds. With the guidance of our certified diamond specialists and graduate gemologists you’ll enjoy a seamless, personalized diamond shopping experience.

Discover why Richter & Phillips Jewelers has been the Cincinnati Tri-State area's trusted go-to for diamonds for over 125 years - schedule your diamond viewing appointment today.

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Diamond Ring Settings

From classic round, bold emerald and princess cuts, to unique marquise diamonds - discover ring settings for every diamond shape.
Ring Settings

the 4cs of diamond quality

The 4Cs are the globally recognized standard for assessing the quality of a diamond across four factors: cut, color, clarity, and carat weight.
Discover the 4cs
photo of a gold object sitting next to several loos diamonds, a coup glass with a cherry in it, a champagne glass, greenery and s gold shaker

Diamond Upgrades & Guarantees

Buy your natural diamond with confidence, knowing you can upgrade it anytime after nine months with our Lifetime Diamond Upgrade Guarantee.
Our Guarantees

Discover why Clients Have chosen Richter & Phillips jewlers as their go-to source for diamonds since 1896

★★★★★

"The staff at R&P was very helpful and professional. Our sales partner Zachary was a fantastic resource and knowledgeable about all aspects of the diamond. We recommend to anyone in the engagement market."

Don Driehaus
Cincinnati
★★★★★

"Sara helped my fiancé and I pick the perfect ring! She was knowledgeable and accommodating, especially with my very unique ring. She saw our vision and nailed it!

Ladies, trust this woman with YOUR LIFE. Her style and taste are top notch!"

Sofia Geiler
Cincinnati
★★★★★

"I had an incredible experience at Richter & Phillips. They took the time to really understand what I was looking for and delivered above and beyond. It made the process exciting and seamless. Highly recommend."

A woman is holding her hand out showing her engagement ring. The ring features an emerald-shaped center stone and a yellow-gold band.
Eric Rudary
Cincinnati
★★★★★

"I had an amazing experience working with Zach at Richter & Phillips. He was very flexible and understanding while trying to find the perfect engagement ring! He kept us informed every step of the way, found a diamond within budget, and only had a few day turnaround on resizing. I couldn't recommend him more."

A close up of a couple holding hands showcasing her engagement ring. The ring features an emerald-cut center stone and a white gold band.
Aaron Boyd
Cincinnati
★★★★★

"We had the BEST experience with Richter and Phillips. Working with Zach was an absolute pleasure and we could not have asked for better customer service. He always made sure we made informed decisions about our engagement ring, paid very close attention to detail, and was incredibly patient and kind. Our ring could not be more perfect, we are so glad we went with them!!!

We 100% recommend R&P to anyone in the greater Cincinnati area. Here is proof of their outstanding and gorgeous customized work!

Thank you for making our dreams come true💍"

A man and woman are kissing, blurred in the background, and focusing on the woman's marquise-shaped engagement ring on her wedding finger.
Stef Martinez
Los Angeles, CA

Frequently asked questions about diamonds & diamond shopping

Shape refers to a diamond’s outline, like round, oval, pear, or emerald. Cut is one of the 4Cs used to measure a diamonds quality and specifically measures how well the diamond’s facets are crafted to reflect light.

A well-cut diamond will sparkle more, regardless of its shape. While both the shape and the cut of the diamond play an essential role in how your diamond looks, cut has the most significant impact on brilliance.

Yes, we have several payment options available. We accept the following credit cards: Visa, MasterCard, American Express, and Discover.

We also offer special financing options for qualified buyers through Wells Fargo, subject to approval with the Wells Fargo Jewelry Advantage® Credit Card. Additionally, we offer a one-year, interest-free layaway plan.

For more information, visit our payment options page or contact us today.

The 4Cs measure a diamond’s quality: cut, color, clarity, and carat weight. Cut is the most important factor for brilliance and sparkle. All of our diamonds are independently certified by trusted labs like GIA or AGS so that you can review an unbiased grading report. If you’re unsure where to start, our Diamond Education page and in-store experts can guide you in choosing a diamond that balances beauty and value.

Absolutely! Custom ring, and diamond engagement ring design is our expertise. About 85% of the rings that leave our store have been customized in some fashion. Check out our 3D Engagement Ring Designer to start exploring engagement ring silhouettes and submit an inquiry to get started.

We offer a range of exclusive benefits*, including:

  • FREE 12-Month All Risk Engagement Ring Insurance
  • FREE Appraisal with Purchase
  • FREE Ring Sizing
  • FREE Annual Rhodium Finish on Engagement Rings
  • FREE Anytime Jewelry Inspection
  • FREE Jewelry Cleaning & Steaming, every day
  • Special Financing Options
  • Lifetime Diamond Upgrades*
  • *For example, if your original natural diamond costs $1,000, your new natural diamond must cost $1,500 or more. This offer applies only to natural diamond center stones, single diamond stud earrings, or solitaire pendants.

We also provide a 15-Day Money-Back Guarantee, allowing you time to ensure your purchase is the perfect fit. Additionally, our Price Protection Guarantee ensures that if you find an identical diamond with the same certification at a lower price anywhere in the U.S. within 90 days of your purchase, we will not only match the price but also give you an extra 5% of the difference.

Our lifetime diamond upgrade program ensures your jewelry preferences adapt as your tastes or circumstances change, offering you everlasting upgrade options.

When you choose a special item from us, we're committed to maintaining its integrity for as long as you cherish it—essentially, for a lifetime. That's why our guarantees are designed to last just as long, ensuring your piece remains as flawless as the day you received it. 

*For more information, visit our Guarantees page or contact us today.

Start by selecting the qualities that matter most to you, such as shape or budget, to filter results quickly. From there, you can refine your selection by the 4Cs (cut, color, clarity, and carat) to find diamonds that best fit your preferences.