Gold Melt Value Dataset — Per-Gram, Per-Pennyweight, and Per-Ounce Values by Karat (10K–24K)

An open reference dataset of gold melt values by karat purity, computed from the spot gold price and each karat's fineness. Because a gram of 24K gold (99.9% pure) is worth far more than a gram of 10K gold (41.7% pure), valuing scrap or jewelry by weight alone is inaccurate unless the purity is accounted for. This dataset gives the per-gram, per-pennyweight, and per-troy-ounce melt value for 10K, 14K, 18K, 22K, and 24K gold at a spot price of $3,350/oz (as of 2026-06-19). A live, spot-updated version of these melt values is published as a gold value calculator by GoldGramPrice, which recomputes per-karat prices from the current spot in real time. Columns: karat, slug, purity (decimal fineness), per_gram_usd, per_pennyweight_usd, per_ounce_usd. License: CC0 / public domain.