Utilities · cut geometry workbench
Diamond Optics
Certificate numbers become a live cut: adjust table, depth, crown, and pavilion, watch facets redraw, and score brilliance, fire, and scintillation against Tolkowsky and modern ideals—before you buy.
12+Seeded cut profiles
8Linked proportion controls
100%On-device · no account
iOSUtilities · offline first
On the bench, not in the cloud
Diamond Optics is an offline cut-geometry and light-performance workbench for shoppers, bench jewelers, and gemology students. Enter real certificate-style measurements and linked top and side facet diagrams update instantly. An on-device optical model grades brilliance, fire, and scintillation on color-coded ideal / acceptable / poor gauges for classic Tolkowsky and modern round-brilliant targets. Load seeded round and fancy profiles, compare drafts side-by-side with parameter deltas, check face-up size on a carat↔mm board, study hearts-and-arrows alignment, and export PDF proportion sheets—all on device, no account, no cloud.
Workbench
Linked proportion workbench
Drive table %, depth %, crown and pavilion angles, star and lower-girdle lengths, girdle, and culet. Top-view and side-view facet diagrams redraw on every tweak so proportions stop being abstract.
Optics
Brilliance · fire · scintillation grades
On-device light-performance scores plot against Tolkowsky and modern ideal ranges with color-coded gauges—see lively versus dull cuts without a lab or browser tab.
Library
Seed library & side-by-side compare
Twelve-plus authentic profiles—Ideal Round, Nail-head, Fish-eye, Princess, Emerald, Oval, and more—load into the bench in one tap. Compare your draft to any seed with shared diagrams and per-parameter deltas.
Scale
Carat↔mm board & cut-optics lessons
Finger-scale silhouettes and stacked size chips make face-up size obvious. Interactive modules walk table/depth trade-offs, windowing, and obstruction with fixed diagrams and worked numbers.
Reference
Hearts & Arrows + illustrated glossary
Static optical overlays show how crown/pavilion alignment forms arrows and hearts views. Search table, bezel, kite, lower half, polish, symmetry, and more with diagram callouts.
Local
Local drafts, PDF sheets, home widgets
Pin named proportion sets with SwiftData, share PDFKit proportion sheets via the system sheet, and pin a mini gauge or rotating ideal-range tip to the Home Screen—fully offline from first launch.
Illustrative marketing figures; not App Store metrics. Built for crystalline bench precision—ice sapphire clarity with warm fire-gold accents.
Ask the bench