Metal Prices: Silver $21.01,   Gold $1,308.00,   Plat $1,486.00  
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Home > Remove gemstones and diamonds > Remove diamonds
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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.
How To
Diamond Grading at Rio Grande
In Rio Grande's Gemstone Department, diamonds of every grade are carefully examined and sorted so you get the quality stone you order.
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.
How To
The Difference Between Carat and Karat
Here's a quick explanation of carat weight in gemstones versus the term karat, used in gold alloys.

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Rio Grande. Recommended by jewelers since 1944.

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7500 Bluewater Rd NW
Albuquerque, NM 87121 USA


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