Gold is priced per troy ounce and fluctuates daily based on global market conditions. Based on current gold spot prices, you can find your necklace’s melt value¹ using its weight and karat rating.
To find your necklace's melt value, you need its weight and karat rating.
How to Calculate Melt Value Step by Step
Melt Value = Weight (in grams) × Purity Percentage × Current Gold Price Per Gram
The karat tells you how much pure gold is in the alloy. 10K is 41.7% gold, 14K is 58.3%, 18K is 75%, and 24K is 99.9%.
Multiply your necklace's total weight by the karat percentage, then multiply that pure gold weight by the current price per gram (roughly $161 at $5,000/oz).
So a 15-gram 18K chain contains about 11.25 grams of pure gold, worth approximately $1,812 in raw metal alone.
The Type Of Value Matters
That number is just the starting point. The real question is which type of value you're looking at.
Your gold necklace's value depends on three things: its weight in grams, its karat purity, and today's gold spot price.
Melt value, insurance replacement value, and resale value are three very different figures. Most people only ever see one of them and assume it's the whole picture.
Why Your Designer or Vintage Necklace May Be Worth More
Melt value is a floor, not a ceiling. Brand premiums are associated with designer pieces from companies like Tiffany, Cartier, or David Yurman.
Vintage or antique necklaces may have collectible value. Unique craftsmanship or gemstone accents can push that number higher.
What You'll Actually Get When Selling
Reputable online platforms typically pay 70-85% of melt value. 50–60% is typically offered by pawn shops and cash-for-gold establishments.
For a single piece, that difference can amount to hundreds of dollars.
How to Get an Instant Gold Jewelry Valuation
Unvault provides a free, instant AI-powered valuation from your phone using gold and silver pricing.
No shipping, no commitment. Just a clear number before you decide anything.
See what your gold necklace is worth.
References
- gemsociety.org/article/jewelry-gold-markup/
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