About

Platinum is a dense, malleable, and highly valuable transition metal used in jewelry, industrial catalysts, and electrical contacts. Unlike gold, platinum jewelry is typically of higher purity, with standards often set at 950 (95%) or 900 (90%). This tool helps investors and scrap sellers determine the value of their holdings. It includes a reference database for common government-issued platinum coins (like the American Eagle and Canadian Maple Leaf) to prevent weighing errors, alongside custom inputs for scrap wire or jewelry.

Formulas

The calculator determines the Pure Platinum Mass m_p based on the object's total mass m_t and fineness F (e.g., 0.950).

Value = (m_t × F) × Price_spot

Reference Data

Grade / Mark	Purity (Parts per 1000)	Purity (%)	Common Application
Pt999	999	99.9%	Bullion Bars, Coins
Pt950	950	95.0%	High-End Jewelry (Standard)
Pt900	900	90.0%	Vintage Jewelry, Japan Standard
Pt850	850	85.0%	Chain Work, Clasps
Pt585	585	58.5%	Budget Jewelry (Rare)

Frequently Asked Questions

Platinum is significantly denser than gold. A platinum ring will feel heavier than a 14K white gold ring of the same size. Additionally, look for hallmarks: Platinum is stamped "Pt", "PLAT", "950", or "900". White gold is usually stamped "14K" or "585" and may show signs of yellowing if the rhodium plating wears off.

This tool requires the current market price of Platinum (XPT). Since market data changes every second, we provide an editable field. You can check financial news sites for the current "Spot Platinum" price per ounce and enter it for accuracy.

Historically, Platinum was more expensive, but market dynamics have shifted due to industrial demand (automotive catalysts) and supply chain factors. Gold is often viewed as a monetary store of value, while Platinum behaves more like an industrial commodity.