The Oath Journal
Fine Jewelry, Explained
Buying guides, gemstone deep dives, metal know-how, and styling advice from the Oath team. Everything you need to choose, wear, and care for fine jewelry with confidence.
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The Essential Guides
New to fine jewelry? These cornerstone guides cover the fundamentals worth knowing first.
Pillar Guide
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Diamond
How to Tell If a Diamond Is Real: Tests That Actually Work and What to Do Next
How to tell if a diamond is real: the fog test, what a diamond tester can and cannot prove about moissanite, why lab-grown diamonds are real, and when to get a re...Read article → -
Buying Guides
How to Buy a Diamond: Cut, Color, Clarity and Carat for Your Budget
How to buy a diamond: why cut matters most, the practical priority order for color and clarity, lab-grown versus natural, plus budget ranges and settings.Read article → -
Birthstones
April Birthstone: Diamond Meaning, Color & Jewelry
Diamond is the birthstone for April. Its meaning, color range, top hardness, and how to choose and care for diamond jewelry.Read article → -
Diamond
How to Style Diamond Jewelry: Metals, Outfit Colors, and Looks for Every Occasion
A practical guide to styling diamond jewelry: the metals that frame its brilliance, the outfit colors it flatters, and how to wear and care for a diamond.Read article → -
Diamond
The History of Diamonds: From Ancient India to the Modern Engagement Ring
The history of diamonds: ancient India, the South African rush and De Beers, the cutting breakthroughs that created modern sparkle, famous stones, the 4Cs, and la...Read article → -
Diamond
How to Evaluate Diamond Quality: Why Cut Comes First and How to Use the 4 Cs
How to judge a diamond with the 4 Cs: why cut comes first, the color and clarity ranges that balance beauty and value, and natural vs lab-grown.Read article →
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