Why We Don't Stock SI3 Diamonds

In Rio Grande's Gemstone Department, diamonds of every grade are carefully examined and sorted so you get the quality stone you order.

Last edited: 4/15/2019

In Rio Grande's Gemstone Department, diamonds of every grade are carefully examined and sorted so you get the quality stone you order.

For example, although some suppliers prefer to mix diamonds of grade SI2 and grade I1 into single batches and offer them as an SI3-grade batch, Rio Grande prefers to separate the two grades. So when you select an SI2-grade or an I1-grade (or any other grade) diamond, you can be confident you will receive the diamond grade you have chosen.


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Gemstones