How do I calculate precious metal yield loss in casting?

Track the weight of finished metal against the weight issued to the run, including grain, sprues, and reclaimed filings. The Precious Metal Yield calculator converts that into a yield percentage and a pennyweight loss figure. Casting shops typically see 2 to 5 percent unrecoverable loss per cycle from oxidation and polishing dust, and pairing it with Scrap Recovery Value shows how much of the rest the refiner actually returns.

How much labor should I charge for stone setting?

Setting time varies sharply by style: a prong-set solitaire runs a few minutes while a pave or channel row can take an hour or more per piece. The Stone Setting Labor calculator multiplies stone count and per-stone setting time by your bench rate, so a 40-stone pave ring at 4 minutes each at $60 per hour comes to about $160 in setting labor alone, separate from casting and finishing.

How many pieces should go on one casting tree?

Tree loading balances flask volume, sprue spacing, and metal fill against defect risk. The Casting Tree Utilization calculator compares pieces mounted per tree to the flask's usable capacity so you can see how much investment metal and cycle time each casting supports. Overloading a tree raises misfill and porosity rejects, so utilization is read alongside Finishing Defect Cost to find the point where adding one more piece stops paying.

What does plating actually cost per piece?

Plating cost is driven by bath chemistry, deposit thickness in microns, surface area, and rack density, not just time in the tank. The Plating Bath Cost calculator spreads solution, current, and bath life across the pieces in a load, so a rhodium flash on white gold or a heavy gold micron finish each carry a defensible per-piece number instead of a flat guess that erodes margin on high-volume runs.

How do I set a repair reserve for warranty and remake work?

Fine jewelry carries returns for lost stones, worn prongs, and sizing, and those costs land after the sale. The Repair Reserve calculator applies an expected repair rate and average repair cost against units shipped to set aside a per-piece reserve. If 3 percent of pieces need a $45 repair, that is about $1.35 reserved per unit, which keeps warranty work from quietly eating into a completed job's margin.

How do I cost the certification and traceability paperwork on luxury pieces?

Serialized and certified goods add documentation labor that many shops never price. The Serialized Item Traceability and Certificate Documentation Load calculators size the per-piece minutes for engraving serials, logging provenance, and issuing grading or authenticity certificates. On a batch of certified diamond pieces, that clerical and lab-coordination time can add several dollars per unit, which belongs in the quote rather than in overhead.

Manufacturing calculator category

Jewelry, Watches & Precision Luxury Goods calculators

This hub covers the math behind jewelry casting, watch assembly, and precision luxury goods production. It is built for bench jewelers, casting shops, and studio owners who lose margin to metal loss, unpriced setting labor, and plating waste. Use these tools to cost a piece before the wax ever hits the tree.

What this hub covers

Costing, yield, labor, capacity, and quality calculators for jewelry casters, watchmakers, and luxury goods producers working in gold, platinum, silver, and set stones.
Browse jewelry, watches & precision luxury goods calculators for manufacturing planning, quoting, quality, capacity, and operations decisions.

Best calculators in this category

Precious Metal Yield: Calculate the percentage of precious metal (gold, silver, platinum, palladium) that ends up in finished jewelry pieces versus total metal charged into a casting, fabrication, or production run. Helps goldsmiths and production managers track material efficiency and identify where metal is lost to sprues, filings, polishing dust, or casting defects.
Casting Tree Utilization: Calculate how efficiently you are filling your casting trees (wax trees or sprues) in investment casting. Measures the ratio of wax patterns actually placed on the tree versus the maximum capacity, helping casting technicians optimize flask usage, reduce per-piece casting cost, and minimize wasted flask and burnout cycles.
Stone Setting Labor: Estimate the total bench labor hours required for stone setting work on a batch of jewelry pieces. Accounts for the number of stones to set, the average setting time per stone (which varies by setting type: prong, bezel, pave, channel, flush), and an allowance for setup, stone sorting, and minor rework.
Polishing Time: Estimate total polishing and finishing labor hours for a batch of jewelry or watch components. Covers hand polishing, machine buffing, and tumbling operations. Accounts for piece count, polishing rate, and allowances for compound changes, wheel dressing, and quality checks between stages.
Plating Bath Cost: Calculate the total cost of an electroplating bath run for jewelry or watch components. Covers gold plating, rhodium plating, silver plating, palladium plating, and PVD coating bath costs. Factors in the number of pieces, plating solution cost per piece, the percentage of pieces actually plated in this run, and fixed costs for bath maintenance, chemistry replenishment, and waste treatment.
Scrap Recovery Value: Estimate the recoverable dollar value of precious metal scrap from jewelry production, including casting sprues, filing dust, polishing sweeps, floor sweepings, and rejected pieces. Helps goldsmiths and production managers track how much value can be reclaimed through refining and decide when to send scrap to the refiner.
Inspection Magnification Workload: Estimate the total hours required for quality inspection under magnification (loupe or microscope) for jewelry, watch components, or gemstones. Covers visual inspection of stone settings, surface defects, hallmark verification, and watch movement examination. Accounts for inspection speed and fatigue allowances.
Serialized Item Traceability: Calculate the total cost of serialization, engraving, and traceability documentation for luxury jewelry or watch pieces. Covers laser engraving, serial number registration, certificate generation, photography, RFID tagging, and blockchain provenance systems. Helps production managers budget for traceability requirements on high-value goods.
Small-Batch Setup Cost: Calculate the total production setup cost for a small batch of jewelry or watch components. Covers mold preparation, wax injection setup, casting flask preparation, tool and die changes, and CAD/CAM programming. Small batches in jewelry (5 to 50 pieces) carry higher per-piece setup costs, making this calculation critical for accurate quoting.
Repair Reserve: Estimate the warranty and repair reserve to set aside for a batch of luxury jewelry or watches sold. Based on historical repair rates, average repair cost, and the expected claim percentage over the warranty period. Helps finance teams, retail buyers, and brand managers budget for post-sale service obligations on high-value goods.
Finishing Defect Cost: Calculate the total cost of finishing defects (scratches, pitting, uneven plating, orange peel, polishing burns, and rhodium flaking) in a jewelry or watch production batch. Covers rework labor, scrap pieces, and additional material cost for re-plating or re-polishing. Helps quality managers quantify the financial impact of finishing quality issues.
Certificate Documentation Load: Estimate the total labor hours required for certificate generation, hallmark documentation, gemstone grading reports, and provenance paperwork for a batch of luxury jewelry or watches. Covers certificate of authenticity, assay office submissions, insurance valuations, and compliance documentation.

Common manufacturing problems solved

jewelry manufacturing
watchmaking
precious metals
gemstone setting
luxury goods production
casting
polishing
plating

Category questions

How do I calculate precious metal yield loss in casting? Track the weight of finished metal against the weight issued to the run, including grain, sprues, and reclaimed filings. The Precious Metal Yield calculator converts that into a yield percentage and a pennyweight loss figure. Casting shops typically see 2 to 5 percent unrecoverable loss per cycle from oxidation and polishing dust, and pairing it with Scrap Recovery Value shows how much of the rest the refiner actually returns.
How much labor should I charge for stone setting? Setting time varies sharply by style: a prong-set solitaire runs a few minutes while a pave or channel row can take an hour or more per piece. The Stone Setting Labor calculator multiplies stone count and per-stone setting time by your bench rate, so a 40-stone pave ring at 4 minutes each at $60 per hour comes to about $160 in setting labor alone, separate from casting and finishing.
How many pieces should go on one casting tree? Tree loading balances flask volume, sprue spacing, and metal fill against defect risk. The Casting Tree Utilization calculator compares pieces mounted per tree to the flask's usable capacity so you can see how much investment metal and cycle time each casting supports. Overloading a tree raises misfill and porosity rejects, so utilization is read alongside Finishing Defect Cost to find the point where adding one more piece stops paying.
What does plating actually cost per piece? Plating cost is driven by bath chemistry, deposit thickness in microns, surface area, and rack density, not just time in the tank. The Plating Bath Cost calculator spreads solution, current, and bath life across the pieces in a load, so a rhodium flash on white gold or a heavy gold micron finish each carry a defensible per-piece number instead of a flat guess that erodes margin on high-volume runs.
How do I set a repair reserve for warranty and remake work? Fine jewelry carries returns for lost stones, worn prongs, and sizing, and those costs land after the sale. The Repair Reserve calculator applies an expected repair rate and average repair cost against units shipped to set aside a per-piece reserve. If 3 percent of pieces need a $45 repair, that is about $1.35 reserved per unit, which keeps warranty work from quietly eating into a completed job's margin.

Last reviewed 2026-05-12.