Diamond Optics

Diamond Optics turns dry certificate numbers into a live optical picture—so you can see whether a cut will look lively or dull before you buy.

Built for diamond shoppers, bench jewelers, and gemology students, it is a complete offline cut-geometry and light-performance workbench. Enter or fine-tune real certificate-style measurements and watch linked diagrams and scores update instantly. No account, no cloud, no permission prompts.

PROPORTION WORKBENCH Adjust table %, total depth %, crown angle, pavilion angle, star length, lower-girdle length, girdle thickness, and culet. Top-view and side-view facet diagrams redraw on every change so geometry stays tied to the numbers you set.

LIGHT PERFORMANCE SCORES An on-device model outputs brilliance, fire, and scintillation sub-scores plus an overall grade. Results plot on color-coded ideal / acceptable / poor gauges for classic Tolkowsky and modern round-brilliant targets—so you can judge a stone against the ranges that matter.

SEEDED REFERENCE LIBRARY Load 12+ authentic profiles in one tap: Ideal Round, Shallow, Deep, Thick Girdle, Nail-head, Fish-eye, Princess, Emerald, Oval, Cushion, Radiant, and Pear. Each starts with realistic measurements ready for the workbench.

SIDE-BY-SIDE COMPARE Compare your current draft to any seed profile with shared diagrams and clear per-parameter deltas (for example +1.2° crown or −0.8% table).

CARAT ↔ MM SIZE BOARD Round-brilliant size chips and a finger-scale silhouette make face-up size obvious without external charts.

LEARN THE OPTICS Interactive modules explain how table and depth trade-offs change face-up size, windowing, and obstruction—with fixed seed diagrams and worked numeric examples. A Hearts & Arrows guide shows how precise crown/pavilion alignment produces the classic arrows and hearts views. A searchable illustrated glossary covers table, crown, pavilion, girdle, culet, bezel, star, kite, lower half, polish, symmetry, and more.

DRAFTS, PDFS, AND WIDGETS Save named local drafts and reload them in one tap. Generate an on-device PDF proportion sheet (measurements, sub-scores, diagram snapshot) and share it through the system share sheet. Home-screen widgets surface rotating ideal-range tips and a mini gauge for a pinned draft.

Fully offline from first launch. Metric or imperial labels and Tolkowsky vs modern ideal defaults are yours to set. Diamond Optics is a reference utility for cut and light—not a catalog, inventory, or buying service.

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