The Oxfordum Journal

What makes Akoya pearls special, how to judge luster, surface and size, and how to care for pearl jewelry so it lasts for generations.

Solid gold, gold-filled, vermeil and gold-plated jewelry can look identical on day one. Here's how they differ in gold content, durability and value.

Moissanite or diamond? We compare sparkle, hardness, color, price and ethics so you can choose the right stone for an engagement ring or everyday piece.