Gold Karat Explained: 10K, 14K, and 18K
Reviewed by ViPawn Licensed Pawnbroker Team · Last updated 2026-09-12
Karat (K) measures gold purity in jewelry alloys. Higher karat generally means more gold content per gram, but design, brand, and stones also affect resale. This educational guide explains common stamps — not financial advice.
Common karat stamps
10K gold is 41.7% gold by weight — durable and common in US jewelry. 14K is 58.3% gold, a balance of strength and richness. 18K is 75% gold, often used in fine jewelry and some international pieces.
- 10K — often marked 10K or 417
- 14K — often marked 14K or 585
- 18K — often marked 18K or 750
Why weight and alloy both matter
Two 14K chains of different weights will have different metal value. ViPawn weighs and tests jewelry in store; stamped karat is verified where possible.
When design adds value
Designer or vintage pieces may trade above scrap when there is resale demand. Staff will explain whether an item is priced as finished jewelry or primarily for metal content.