Metal Prices: Silver $22.31,   Gold $1,368.75,   Plat $1,470.00  
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Shop a huge selection of diamonds 0.40 ct. and above. With our extensive inventory of GIA-certified diamonds ranging in cut, carat, color and clarity, you can quickly and easily find the perfect stone for your next jewelry piece. SHOP NOW!

Shop our wide, in-stock selection of GIA-certified diamonds less than
0.4 ct. in size and get your diamonds shipped the same day on most orders placed before 4:30 p.m. Mountain Time. SHOP NOW!

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:

1) be listed with the Jewelers Board of Trade; as a member, you automatically qualify.

2) be able to provide us with a current copy of your business license OR two invoices or statements from another supplier in the jewelry industry.

3) be a student currently enrolled in jewelry-making course who can provide either a letter from your instructor on school letterhead or a copy of your coursework transcript.

Please fax or email your qualifying information to us:

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

If you have any questions about buying diamonds, please contact us; our Gemstone Department is always happy to help.


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diamonds
Home > Remove gemstones and diamonds > Remove diamonds
2 results | 1 pages
Chart
Sizing Round Diamonds
Diamond sizes can vary, so use this reference chart to compare the range of carat sizing to millimeters for easier stone-setting.
Chart
GIA Diamond Color Grading Scale
The Gemological Institute of America created this scale of color and clarity grading for diamonds, and it remains the international standard.

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