GleamJewel Cut

GleamJewel Cut Studio is an interactive diamond and transparent-gem cut-proportion and educational light-path workbench for bench jewelers, custom-engagement shoppers, hobby faceters, and gemology students.

Lock real cut numbers—shape silhouette, table %, total depth, crown and pavilion angles, star and lower-girdle halves, girdle, culet, and length-to-width—then see why a stone looks bright or dead before you buy, sell, or recut. Generic jewelry calculators and photo galleries do not offer this proportion + ray-sketch + diagnosis loop.

BUILD PRECISE CUT CARDS
Pick silhouette (round brilliant, oval, cushion brilliant, emerald step, pear, marquise, radiant-style, princess-style), enter mm or linked carat mass, and lock table %, total depth %, crown angle, pavilion angle, star length, lower-girdle halves, girdle thickness band, culet size, and L/W ratio with live range cues.

DUAL DIAGRAM WORKSPACE
Work from a proportional top facet map and side profile together. Color-zoned crown, pavilion, and table guides, bevel-edged gem frames, and tap-to-highlight facet groups keep geometry readable—not a blank canvas.

EDUCATIONAL RAY SKETCH
Toggle simplified bounce paths that label light return to the crown, pavilion leakage, and fish-eye risk for the current angles. Physics-lite model with an on-screen educational-approximation-only badge.

LOOK DIAGNOSIS YOU CAN EDIT
Explainable rule tips for nail-head, fish-eye, windowing, dark center, and steely shallowness driven by the proportions you entered. Outputs drivers you can change—never a lab grade or certificate number.

SEEDED CUT ATLAS
Twenty-four-plus classic educational exemplars covering ideal-ish, deep, and shallow rounds plus common fancy outlines. Each card includes notes and one-tap duplicate-into-editor so first launch is never empty.

RECUT ESTIMATOR
Load as-is proportions, propose target table, angles, and depth, and review approximate weight-retention % plus face-up diameter change before committing to cutting.

SIDE-BY-SIDE COMPARE
Pin two cut cards, overlay profiles, and contrast ray-summary chips and diagnosis flags on one screen.

CLIENT-BRIEF DRILLS
Twelve seeded scenarios—fix fish-eye without dropping below a retention floor, open a dark center, or match a described face-up look—with pass/fail and concrete proportion deltas.

LEARN THE LANGUAGE OF CUT
Interactive glossary with hotspot overlays on a master brilliant diagram for table, stars, bezel, upper girdle, pavilion mains, lower girdle, culet, and girdle—short plain-language copy. Angle-sensitivity charts let you sweep crown or pavilion angle and plot a simple light-return proxy so steepness trade-offs are visual.

Share a proportion summary image via the system share sheet. Local library of your cut cards with search by shape and tag—no accounts required. Fully offline so the atlas, editor, and drills stay available.

Not a clarity-inclusion plotter, not a metal-alloy melt ticket, and not a grading-lab clone: pure proportion-and-optics workbench. Not affiliated with any gemological laboratory; educational model only. Permanent in-app Privacy Policy, Terms of Use, and educational disclaimers.