Collection of free jewelry industry tools. Includes gold price tracker, diamond price estimator, diamond size chart, ring size converter, gold scrap calculator, pricing calculator, profit margin calculator, and metal weight converter.
- 8 free tools for jewelry research and professionals
- Live gold/silver/platinum prices, diamond pricing, size charts
- Professional tools: scrap calculator, pricing formula, profit margin, weight converter
- All tools run in the browser, no signup required
- Updated daily with market data where applicable
Free tools
Jewelry Business Tools
Industry-grade calculators and converters for jewelry professionals. No signup required. Just open and use.
Research & Buying
Gold Price Today
Live gold spot price with per-karat breakdown in troy ounces, grams, or pennyweight. Plus silver and platinum.
XAU · XAG · XPT · Daily
OpenDiamond Price Estimator
Estimate retail diamond prices based on carat, cut, color, clarity, and shape. Includes lab-grown comparison.
4Cs + Shape + Lab toggle
OpenDiamond Size Chart
Interactive size chart with visual comparison, finger simulation, and carat-to-mm data for all 10 shapes.
Visual · Compare · On Finger
OpenRing Size Converter
Convert between US, UK, European, Japanese, and metric ring sizes with a full reference chart and measuring guide.
US · UK · EU · JP · mm
OpenProfessional Tools
Gold Scrap Calculator
Estimate the melt value and dealer buy price for scrap gold based on weight, karat, and current spot price.
Spot price × Purity × Weight
OpenPricing Calculator
Calculate retail and wholesale prices from material cost, labor, and markup. The standard formula used by working jewelers.
Material + Labor + Markup
OpenProfit Margin Calculator
Analyze profit margin, markup, and multiplier from selling price and costs. Health indicator benchmarked to industry averages.
Margin · Markup · Health
OpenMetal Weight Calculator
Convert between grams, troy ounces, pennyweight, and carats. Volume estimates by metal density.
g · oz · dwt · ct
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