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Our calculator uses today's published gold spot price and standard karat purity values to give you an accurate melt value estimate. The calculation itself is precise. However, melt value is theoretical — it reflects what you'd receive if your piece were melted and refined. Most jewelry sells for more than melt value, especially branded or designer pieces.

Look for a hallmark stamp: inside a ring band, near a necklace clasp, or on earring posts. Common stamps: 24K/999, 18K/750, 14K/585, 10K/417. No stamp? A jeweler can test purity via acid test or electronic tester. Unvault's evaluation also identifies metal content as part of the free valuation.

Gold is measured in troy ounces (31.1035g), not standard avoirdupois ounces (28.35g) — about 10% heavier. Our calculator accepts grams, troy oz, pennyweights, and avoirdupois oz and converts automatically.

Pennyweight (dwt) is 1/20 of a troy ounce (~1.555g), commonly used by US jewelers and pawnshops. If you receive quotes per pennyweight, our calculator accepts dwt as an input so you can compare easily.

Yes. Unvault purchases gold rings, necklaces, bracelets, earrings, watches, and more. Unlike scrap buyers, Unvault evaluates each piece individually and pays for its full resale value — not just melt value. Get a free valuation to see what yours is worth.

Unvault's offers are based on full resale value — metal content, brand, design, condition, gemstones, and current market demand. For most quality or branded jewelry, Unvault's valuation will exceed melt value. Every piece is evaluated individually, so submit yours for a free valuation to find out.

Gold is a globally traded commodity influenced by the US dollar, interest rates, central bank activity, geopolitical events, and investor sentiment. It's considered a "safe haven" asset — prices tend to rise during economic uncertainty. We update the spot price daily so your estimate is always current.

Yes — enter the weight and purity for any gold form. American Gold Eagles are 22K (91.67%), Canadian Maple Leafs are 24K (99.99%), Krugerrands are 22K. Dental gold varies (typically 10K–18K) and needs professional testing to confirm purity.

A digital kitchen scale accurate to 0.1g works for most pieces. Jewelry scales accurate to 0.01g are available online for under $20 and support multiple unit modes (g, ozt, dwt). Remove attached charms before weighing separately. For pieces with large stones, a jeweler can weigh metal content independently.