Chains That Don't Tarnish Fast: Alloys and Plating Thickness
Why some chains stay bright and others go gray in a season — the chemistry of tarnish, what 925, Argentium, and 2.5-micron vermeil actually buy you.
Sep 26, 2026 · Updated Sep 26, 2026
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Jewelry
Gold-filled, vermeil and silver grades — measured against FTC and hallmarks, not the marketing page.
Pearl Types and Grades: Akoya, Freshwater, South Sea
What separates akoya, freshwater, South Sea, and Tahitian pearls — oysters, nacre thickness, and why the AAA-to-A grade on the tag is convention, not law.
Sep 5, 2026 · Updated Sep 5, 2026
Gold-Filled vs Gold-Plated vs Vermeil: What the Labels Legally Mean
The three labels that decide whether your chain outlives the receipt — what US guidance actually reserves each term for, and how to read a jewelry listing in ten seconds.
Sep 22, 2026 · Updated Sep 22, 2026
Nickel, Titanium, Gold: Earring Metals and Sensitive Ears
Why nickel causes most earring reactions, what the EU release limits actually require, and which metals — 316L steel, titanium, niobium, gold — make sense.
Sep 3, 2026 · Updated Sep 3, 2026