CruKarat Jewel
Seeded crucible cabinet
Browse 24+ classic jewelry alloys as layered molten recipe cards with karat badges and use tags—fork any mix instead of building fineness from scratch.
Bench · Alloy · Torch-ready
CruKarat Jewel
Lock karat, balance scrap, and print torch-ready melt tickets before the crucible ever sees flame—alloy math for bench goldsmiths who refuse to guess additions.
24+Seeded jewelry alloys
6-metalAu Ag Cu Zn Ni Pd parts
100%On-device & offline
iOSBench-side Productivity
Forged for the bench, not the showroom
CruKarat Jewel is a hands-on precious-metal recipe studio for bench goldsmiths, jewelry students, small-shop casters, and apprentices. Open a seeded crucible card, drag Au/Ag/Cu/Zn/Ni/Pd parts on a live millesimal fineness bar, preview color tier and workability, then solve a melt ticket from the fine gold and scrap lots actually on your bench. Density-aware pour estimates fill your ingot mold without leftover heels of mystery alloy. A built-in cabinet of classic jewelry mixes—14k US yellow, 18k European rose, nickel- and palladium-whites, green gold, 22k coin yellow, solder mates, and platinum hardener sketches—means you never start from an empty calculator. Fully offline, no account gate, no gem or mount tools—just expressive alloy control so makers stop winging master-alloy scoops at the torch.
Alloy cabinet controls
Six metal parts, seeded recipes, and pour math that stay on the device—right beside the torch checklist.
Live fineness bar
Lock target karat, drag pure-metal parts, and watch millesimal fineness update with overshoot and undershoot warnings before you commit the pot.
Color & workability preview
See warm-rose to cool-white swatches plus hardness tier, anneal hints, and torch-solder flow notes tied to the exact Au–Ag–Cu–Zn–Ni–Pd blend.
Scrap-to-karat melt tickets
Enter fine gold, multi-lot scrap karats and masses, optional melt loss—get exact master-alloy and base-metal additions that land inside a safe fineness band.
Density pour estimates
Size ingot or sprue-button cavities with alloy-specific density, fill percent, and leftover heel guidance so the pour matches the mold, not a hopeful guess.
Shareable melt summaries
Export plain-text or simple PDF melt tickets via the system share sheet—recipe parts, additions, loss assumption, and pour weight for the bench log.
Core loop before the flame
01 · CardOpen a seeded crucible recipe from the alloy cabinet.
02 · TuneBalance Au/Ag/Cu/Zn/Ni/Pd on the live fineness bar.
03 · PreviewCheck color tier, hardness, and solder notes.
04 · TicketSolve melt math from fine gold and scrap on hand.
05 · PourEstimate mold fill by density, then share the summary.