💎 Diamond Price Calculator
Estimate a diamond's price from its carat weight and a price per carat — choose a 4Cs quality tier or paste your own dealer figure for a precise result.
💎 Carat Weight × Price Per Carat
What is a Diamond Price Calculator?
It estimates what a diamond costs by multiplying its carat weight by a price per carat. Because $/ct is driven by the 4Cs — cut, colour, clarity, and carat — the tool gives you broad quality-tier presets to start from, or you can drop in an exact figure from a dealer.
Use it to sanity-check a quote, compare two stones, or budget for an engagement ring. Prices swing widely with certification, shape, and the market, and the tool prices the loose stone only — always confirm against a current GIA-certified quote before you commit.
❓ Frequently Asked Questions
How is a diamond's price calculated?
At its core, diamond price = carat weight × price per carat. A 1.5 ct stone at $8,000 per carat is about $12,000. The tool lets you set the price per carat from a quality-tier preset or a live dealer quote, then multiplies by the carat weight.
What are the 4Cs and why do they matter so much?
Cut, colour, clarity, and carat are the four attributes that set a diamond's price per carat. Cut governs sparkle, colour runs from D (colourless) down, clarity grades inclusions, and carat is weight. Better grades command a far higher $/ct, and price also jumps at round weights like 1.00 and 2.00 ct.
Are the tier presets real market prices?
They're illustrative mid-range figures for a roughly one-carat stone to give you a starting point across broad quality bands — not live pricing. Real prices vary widely by certification, shape, and market conditions, so always verify against a current GIA-certified quote before buying or selling.
Does the calculator account for the setting or certification?
No — it prices the loose stone only. A finished ring adds the metal, side stones, and craftsmanship, while a GIA or AGS certificate can meaningfully affect resale confidence and value. Use this as a quick estimate and confirm the full price with a jeweller.