A piece begins as a sculpt on screen and ends as cast metal. What happens at each step — sculpting for the constraints of casting, lost-wax, finishing — and where each step is done.

.925 is a ratio: 92.5% silver, 7.5% other metal. Why pure silver isn't used for jewelry, how solid cast differs from hollow and plated, and what the marks on a piece should tell you.

A bangle and a chain bracelet need different measurements from the same wrist. How to measure at home, how much ease to add, and which pieces can't be adjusted after casting.

Necklace length is the full circumference of the chain, not the drop. Where each standard length sits, how to measure at home, what a pendant and an extender add, and which chains can't be shortened later.

Earring weight is sometimes given per pair and sometimes per earring, and the difference is doubling. What the number tells you, what it doesn't, and where to find it on a listing.

Gold vermeil, gold plated, and gold filled are not interchangeable terms. Two are defined by the FTC, with requirements for the base metal and the thickness of the gold layer. What each one means.

Two ways to measure ring size at home — from a ring that already fits, or from the finger itself. The errors that make each method give the wrong number, and why band width changes the answer.