Coro Jewelry: A Collector’s Guide
Coro, a contraction of founders Cohn and Rosenberger’s names, grew into one of the largest costume jewelry manufacturers by sheer production volume in the mid-20th century, making it both genuinely important to the hobby’s history and, because of that volume, generally more affordable to collect…
Miriam Haskell Jewelry: A Collector’s Guide
Miriam Haskell founded one of the few major female-led jewelry houses of her era, and the company’s reputation rests specifically on hand-wired construction techniques that set it apart from nearly every mass-production competitor of the same period. Genuinely Hand-Wired Construction Unlike most costume jewelry assembled…
Weiss and Other Signed Costume Jewelry Makers
Beyond the handful of giant houses that dominate most costume jewelry conversations, several smaller but genuinely well-regarded signed makers built loyal collector followings of their own, each known for a specific strength worth understanding. Weiss: Exceptional Rhinestone Quality Weiss built its reputation specifically on rhinestone…
Real vs. Fake Gemstones: How to Tell Them Apart
“Real” versus “fake” gemstones is actually three genuinely different categories, not two — natural stones formed by geology, lab-created stones that are chemically identical to natural ones but grown artificially, and simulants that merely look similar with no real chemical relationship at all. Natural Gemstones…
Diamond Identification Basics: The 4 Cs Explained
Cut, color, clarity, and carat weight — the “4 Cs” — form the standard universal framework for evaluating any diamond, and understanding what each one actually measures clears up a surprising amount of common confusion. Cut: Not the Same as Shape Cut refers to how…
Birthstone Guide: The Complete List by Month
Birthstones are traditional gemstone associations tied to each month of the year, useful both for understanding gift-giving traditions behind vintage jewelry and for modern reference, though the specific list has genuine variation between different traditions. The Modern Birthstone List Month Birthstone January Garnet February Amethyst…
Antique Cut Diamonds: Old Mine, Old European, and Rose Cuts
Diamonds cut before the modern era used genuinely different cutting styles than today’s standard proportions, and recognizing these antique cuts is a reliable way to help date a piece — while also understanding why collectors specifically value these older cuts on their own terms rather…
How to Clean Vintage Jewelry Safely
Cleaning vintage jewelry safely starts with recognizing that different materials need genuinely different approaches — a one-size-fits-all cleaning routine is actively risky given how much a single jewelry box can mix solid metal, glued costume settings, porous gemstones, and organic materials like pearls. Fine Jewelry:…
Restringing Pearls: When and Why It’s Needed
Pearl necklaces need a specific kind of maintenance most other jewelry doesn’t: periodic restringing, a genuine consequence of the traditional silk-thread construction used to string pearls together. Why Silk Thread Wears Out Traditional pearl stringing uses silk thread, which stretches gradually and can weaken or…
Repairing Vintage Jewelry: A Complete Guide
Vintage jewelry develops predictable kinds of wear over decades, and knowing what’s actually repairable — and what a repair genuinely involves — helps decide whether restoration is worth pursuing for a specific piece. Broken Clasps A broken or malfunctioning clasp is one of the more…