Collection of 9 free jewelry tools. Includes gold price tracker with per-karat breakdown, scrap calculators for gold and silver, diamond price estimator, diamond size chart, ring size converter, pricing and profit margin calculators, and metal weight converter.
- 9 free tools, no signup required
- Daily gold, silver, and platinum pricing with per-karat breakdown
- Scrap calculators for gold and silver melt value
- Diamond estimator, size chart, ring size converter
- Pricing formula and profit margin calculators for jewelers
Jewelry Tools
Calculators and reference data for pricing, sizing, and research. Free, runs in your browser.
Pricing & Market Data
Gold Price Today
Spot price with 9K to 24K breakdown in USD and EUR. Grams, troy ounces, or pennyweight.
Gold Scrap Calculator
Melt value and typical dealer buy price for scrap gold. Enter weight, pick karat.
Silver Scrap Calculator
Melt value for scrap silver by weight and purity. Uses daily spot price.
Diamonds & Sizing
Diamond Price Estimator
Estimate retail price by carat, cut, color, clarity, and shape. Lab-grown toggle included.
Diamond Size Chart
Visual size comparison and carat-to-mm data for all 10 shapes. Includes on-finger simulation.
Ring Size Converter
US, UK, EU, Japanese, and metric conversions with a full reference chart.
Business & Production
Pricing Calculator
Material cost + labor + markup. The standard formula working jewelers use to set prices.
Profit Margin Calculator
Margin, markup, and multiplier from selling price and cost. Benchmarked to industry averages.
Metal Weight Calculator
Convert between grams, troy ounces, pennyweight, and carats. Volume estimates by metal density.