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
Tourmaline
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Buying Guides
How to Buy Tourmaline Jewelry: Navigating Its Colors From Rubellite to Paraiba
How to buy tourmaline jewelry: choosing among its huge color range, why rare copper-bearing Paraiba commands a premium, plus budget ranges and settings.Read article → -
Gem Quality
How to Evaluate Tourmaline Quality: Color Variety, Clarity & Value Factors
What makes a fine tourmaline: why color and variety lead, why Paraiba stands apart, how clarity shifts by color, the treatments to ask about, and the care.Read article →
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