Rio Grande Jewelry Making Supplies
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Diamonds

Our extensive selection of GIA-certified diamonds spans the range of cut, carat, color and clarity to meet every jeweler's needs. You must be a Rio-certified diamond buyer in order to purchase loose diamonds from us. Becoming certified is simple; find out how today!
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Diamonds less than 0.40 ct.

Rio Stock Diamonds

We keep diamonds up to 0.33 carats in stock. Place your order before 4:30 p.m. MST, and it will ship the same day!

Diamonds 0.40 ct. and above

Rio Diamond Marketplace

Shop a huge selection of diamonds 0.40 carats and above. Our comprehensive inventory is searchable by cut, carat, color and clarity, so you can quickly and easily find the the stone you need.

Wedding and Engagment Rings

Wedding and Engagement Rings

Find the perfect match for the diamond. Shop our huge selection of engagement ring settings and weddings bands for him and for her.

Wedding and Engagment Rings

Pick a Stone, Any Stone…

Don't see the stone you're looking for? No problem. Give our in-house gemologists a call. They're experts at sourcing diamonds and gemstones for every design.

Rio Grande sells diamonds only to members of the jewelry trade who have been established by Rio as qualified diamond buyers. To qualify as a diamond buyer, you must meet one of the following three criteria:

  • be listed with the Jewelers Board of Trade; as a member, you automatically qualify.
  • be able to provide us with a current copy of your business license AND two invoices or statements from another supplier in the jewelry industry.
  • be a student currently enrolled in a jewelry-making course who can provide either a letter from your instructor on school letterhead or a copy of your coursework transcript.

You can fax or email your qualifiying information to us. Have a question? Give us a call or send us an email. Our Gemstone Department is always happy to help.

Toll-free: 800.257.7026
Phone: 505.839.3188
Fax: 505.839.3297
Email: gemstones@riogrande.com


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Rio Grande. Recommended by jewelers since 1944.

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Rio Grande. A Berkshire Hathaway Company.
A Berkshire Hathaway Company.

Contact 1.800.545.6566

7500 Bluewater Rd NW
Albuquerque, NM 87121 USA

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