Updated
Diamonds
Diamond Depth Percentage Calculator
Calculate depth % from measurements, convert depth % into depth (mm), estimate spread impact, and get practical proportion insights for round and fancy-shaped diamonds.
Depth Percentage, Depth (mm) & Spread Estimator
Work in millimeters (mm). Compute depth % from report measurements, solve depth (mm) from depth %, and screen proportions in one place.
Depth % is a powerful screening metric, but it is not a cut grade on its own. Use depth % with table %, angles, symmetry, polish, and real-world light performance to make a confident decision.
Use this tab when you only have depth % but want a physical depth estimate in mm based on the diamond’s face-up measurements. For fancy shapes, optional ratios can help compare “profile” across designs.
These insights are practical screening heuristics. Depth % and table % can flag likely tradeoffs, but performance is decided by how all proportions and facet precision work together.
Lot totals are useful for inventory planning and consistency checks. For mixed shapes or very different sizes, split the batch into similar groups for cleaner comparisons.