The Karat Purity Scale™ (KPS™) unites every metal — from gold and silver to platinum and copper — under a single 0–24 framework. Inspired by the 24k system, it simplifies purity into one global language that investors, jewellers, and consumers can all trust.
At KPS, we exist to challenge outdated norms. Purity should be simple, universal, and transparent — a standard that applies to gold, silver, platinum, copper, and every metal of value. The Karat Purity Scale™ (KPS™) is our answer: a single global language built on fairness, history, and CommonSensus™ thinking.
The Karat Purity Scale™ isn’t just about numbers — it’s about making purity clear, consistent, and comparable for everyone in the precious metals world.
A universal scale means less confusion when explaining purity to customers and suppliers.
Shoppers can instantly compare purity across metals without decoding karats, fineness, or percentages.
KPS™ enables straightforward valuations across markets, reducing misinterpretations.
Historical and modern pieces can be compared on the same 0–24 scale.
CommonSensus™ thinking rejects prestige bias and tradition for tradition’s sake. Instead, it embraces evidence, transparency, and fairness — ensuring all metals are valued on equal, data-led terms. By doing so, copper is restored to its historic place alongside gold and silver.
Explore our Knowledge Vault for clear answers to frequently asked questions, along with in-depth whitepapers you can download to deepen your understanding of KPS™ and metal purity.
From expert analysis to breaking announcements, our blog and press releases keep you informed on the latest in metal purity, market trends, and KPS™ developments.
