AltGems
Updated as of June 2026

Diamond Cut Guide

Cut is the biggest driver of sparkle, more than carat or color. It grades how well a stone's facets return light.

A well-cut stone looks brighter and larger than a poorly cut one of the same weight. Prioritize cut quality first, then balance color, clarity, and carat to your budget.

Put it into practice
Shop certified stones
Shop now

Frequently asked questions

Diamond Cut Guide?
Cut is the biggest driver of sparkle, more than carat or color. It grades how well a stone's facets return light. A well-cut stone looks brighter and larger than a poorly cut one of the same weight. Prioritize cut quality first, then balance color, clarity, and carat to your budget.
What matters most?
A well-cut stone looks brighter and larger than a poorly cut one of the same weight. Prioritize cut quality first, then balance color, clarity, and carat to your budget.