The Journal · Topic

Gemstone Guides

Sapphires, emeralds, opals, pearls and the underrated stones — how to judge colour, treatment, durability and value in antique and fine gemstones.

Antique gemstone jewelry featuring sapphire, emerald, ruby, opal, and old-cut diamond rings illustrating how to evaluate fine jewelry quality, color, cut, clarity, treatments, and natural gemstones.
July 2026

How to Tell If a Gemstone Is Fine: A Collector's Field Guide

"Fine" is about the quality of the material, not the age of the piece. What separates a fine gemstone from a merely...

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