Updated as of June 2026
Round Iolite
Iolite in a round cut pairs the most popular and most brilliant cut with Iolite's blue, violet-blue, gray color and Mohs 7 hardness.
Why the round cut works for Iolite
The most popular and most brilliant cut, engineered to maximize sparkle. Iolite reads more for color than fire, so a round cut is about shape and color rather than sparkle. At Mohs 7, Iolite holds a crisp round outline and stands up to everyday wear. Treatment to expect: typically untreated.
Other Iolite cuts
More on this stone: Iolite overview, price guide, and the round cut guide across stones.
Frequently asked questions
Does Iolite look good in a round cut?
Yes. Iolite reads more for color than fire, so a round cut is about shape and color rather than sparkle. It is hard enough to hold a crisp outline.
How much does a round Iolite cost?
Iolite runs about $15 to $150 per carat. Shape affects price modestly, with round usually the slight premium.
What setting suits a round Iolite?
Iolite pairs well with white gold, sterling silver, yellow gold. A three-stone setting frames it nicely.