Know what your gold is worth, and get the size, weight and stamp right
Gold jewelry calculators and plain-English guides, built from the questions people actually search.
Gold today
$141.74per gram, pure gold
- Troy oz
- $4,408.50
- 14k
- $82.92/g
- 18k
- $106.30/g
- 10k
- $59.10/g
- dwt
- $220.42
Spot price from gold-api.com, September 4, 2026. Updated daily; a reference for melt value, not a buying or selling quote.
What a piece is worth melted
Karat
- 24k · 99.9% gold
- 22k · 91.6% gold
- 21k · 87.5% gold
- 18k · 75% gold
- 14k · 58.5% gold
- 12k · 50% gold
- 10k · 41.7% gold
- 9k · 37.5% gold
Unit
- grams
- pennyweight
- troy ounces
- ounces
Melt value today
$829.16
10 g of 14k holds 5.85 g of pure gold · $82.92 per gram of 14k. Buyers pay a share of this.
Ring size in millimeters
Inside diameter
17.3mm
US 7 · UK N½ · EU 54 · circumference 54.4 mm.
All calculators
Selling gold
Price per gramMelt value by karat at today's spot price
Scrap payoutA mixed lot: melt value and what buyers actually pay
Check an offerAny buyer's quote as a share of melt value
Karat to percentPurity, fineness and grams of pure gold
Weight unitsGrams, pennyweight and troy ounces, priced
Real or fake
Fit and size
Ring sizeUS, UK, EU and millimeters, both ways
Chain lengthWhich length sits where on you
Chain weightGrams and value by style, width and length
Chain widthMillimeters drawn to scale next to a quarter
Bracelet sizeWrist measurement to bracelet length
Earring gaugeGauge to millimeters and the next size up
Guides
Selling gold
Gold filled valueGrams and dollars by stamp, and who buys it
375 stampNine karat gold, its value and US rules
750 stamp18 karat, its value and the marks beside it
10k vs 14k vs 18kPrice per gram, hardness and which to buy
Real or fake
Real or fakeTests that prove something and tests that do not
Gold testersElectronic, acid, XRF: what each one sees
Hallmarks by countryUK, France, Italy, India, Russia, US: who guarantees what
Buying
Filled vs platedLayer thickness, wear and what each is worth
Plating thicknessFlash, standard and micron plating in months
Plated vs steelWhich cheap gold look actually lasts
Gold colorsAlloys, durability and price of each color
MejuriSolid gold vs vermeil, priced by metal
Ring retailersBlue Nile vs Brilliant Earth in 2026
Kay vs Zales vs JaredOne owner, three storefronts, the real differences
Fit and size
Chain typesStrength, kinking and repair, style by style
Strongest chainWhich link survives daily wear and a pendant
Wearing and care
Water and goldShower, pool and ocean by karat and plating
TarnishWhat darkens 14k, how fast, and the fix
CleaningSoap, cloth and ultrasonic: what is safe
StorageTangles, tarnish and scratches, prevented
Green skinWhy it happens and which gold does not do it
Nickel-freeWhich karats and alloys suit sensitive skin
Vermeil lifespanYears by item, and what wears it out