Gold Education Library

Expert guides covering gold purity, karat systems, hallmarks, testing methods, and everything you need to understand precious metals.

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Side-by-side comparison of 14 karat and 18 karat gold rings showing the subtle color difference

comparison19 min read

14K vs 18K Gold: Which Should You Buy?

14K vs 18K gold compared side by side - purity, durability, price, color, and which karat is best for rings, daily wear, and investment.

Close-up of a 14 karat gold ring with the 585 hallmark stamp visible on the inner band

gold-purity16 min read

What Does 585 Mean on Gold? Complete Guide

Learn what 585 means on gold jewelry. This complete guide explains the 585 fineness mark, its connection to 14 karat gold, value calculations, and how to verify authenticity.

Luxurious 18 karat gold jewelry with the 750 hallmark, displayed on black velvet

gold-purity20 min read

What Does 750 Mean on Gold Jewelry?

Discover what the 750 stamp means on gold jewelry. This guide covers 18 karat gold purity, European hallmarking, color variations, value, and how 750 compares to other gold fineness marks.

Collection of gold samples arranged from pale 8 karat to rich 24 karat showing the purity gradient

gold-purity20 min read

Gold Karat Chart: Complete Purity Reference

Complete gold karat chart with purity percentages, fineness values, common stamps, and typical uses for every karat from 8K to 24K.

Gold testing equipment including a jeweler loupe, acid test kit, and magnet alongside a gold necklace

testing25 min read

How to Tell If Gold Is Real: 12 Methods From Simple to Scientific

Learn 12 proven methods to test if gold is real, from simple at-home checks like the magnet test to professional techniques like XRF spectrometry and fire assay.