Updated as of June 2026
Princess Ruby
Ruby in a princess cut pairs a sharp square brilliant with Ruby's red, pinkish red color and Mohs 9 hardness.
Why the princess cut works for Ruby
A sharp square brilliant, modern and very sparkly. Ruby has the brightness to carry a princess brilliant cut and throw plenty of light. At Mohs 9, Ruby holds a crisp princess outline and stands up to everyday wear. Treatment to expect: heat treatment.
Other Ruby cuts
More on this stone: Ruby overview, price guide, and the princess cut guide across stones.
Frequently asked questions
Does Ruby look good in a princess cut?
Yes. Ruby has the brightness to carry a princess brilliant cut and throw plenty of light. It is hard enough to hold a crisp outline.
How much does a princess Ruby cost?
Ruby runs about $100 to $5,000 per carat. Shape affects price modestly, with round usually the slight premium.
What setting suits a princess Ruby?
Ruby pairs well with yellow gold, white gold, platinum. A three-stone setting frames it nicely.