Diamond prices are not straightforward. Two diamonds of the same carat weight can differ in price by 300% based on cut quality, color, clarity, and where you buy them. This guide gives you real, current price ranges for lab grown diamonds by carat size and shows you exactly how that compares to natural diamonds in 2026.
Lab Grown Diamond Price Table by Carat (2026)
| Carat Size | Lab Grown (Ring) | Natural Diamond (Ring) | Savings vs. Natural |
|---|---|---|---|
| 0.5 carat | $400 – $800 | $1,500 – $2,500 | ~72% less |
| 1 carat | $900 – $1,800 | $4,000 – $7,000 | ~75% less |
| 2 carat | $2,000 – $4,500 | $12,000 – $20,000 | ~78% less |
| 3 carat | $4,500 – $9,000 | $25,000 – $42,000 | ~80% less |
| 5 carat | $14,000 – $28,000 | $90,000 – $150,000+ | ~84% less |
Price Comparison Chart: 1, 2, and 3 Carat Diamonds
What Affects the Price Within Each Carat Size
Two 1-carat lab grown diamonds can differ in price by $800+. Cut grade matters most — directly affects brilliance. Color (H–J vs D–F) is less visible in smaller stones. SI1 clarity is eye-clean for most buyers under 2ct. Round brilliant commands the highest price per carat; ovals and cushions run 10–20% less. Always insist on IGI or GIA certification.
Price by Shape (Same Carat Weight)
| Shape (1 Carat, VS2/G) | Approx. Price (Lab Grown) | Notes |
|---|---|---|
| Round Brilliant | $900 – $1,800 | Most popular, highest price per carat |
| Oval | $750 – $1,500 | Appears larger than round |
| Cushion | $700 – $1,400 | Romantic, vintage feel |
| Emerald Cut | $650 – $1,300 | Clarity matters more here |
| Pear | $700 – $1,400 | Elongates the finger |
| Princess | $750 – $1,500 | Geometric, requires protective setting |
Frequently Asked Questions
How much does a 1-carat lab grown diamond ring cost in 2026?
Approximately $900–$1,800 from a reputable online retailer (IGI certified, VS2/G, excellent cut, round brilliant in white gold solitaire). Brillianteers prices 1-carat lab grown rings starting around $900, with premium grades reaching $1,600–$1,800.
How much does a 2-carat lab grown diamond ring cost?
Approximately $2,000–$4,500 in VS2/G, excellent cut in 2026. The same natural diamond would run $12,000–$20,000. The 2-carat oval is particularly popular — it looks significantly larger than a 2-carat round at typically lower prices.
How much does a 3-carat lab grown diamond ring cost?
Approximately $4,500–$9,000 in 2026. Equivalent natural diamonds range from $25,000–$42,000. The price gap widens at larger sizes because natural large diamonds are significantly rarer.
Are lab grown diamond prices still falling?
Yes. Prices have fallen 60–75% since 2020 and continue to decline as growing technology scales. There’s no meaningful reason to wait — the savings available today are already extraordinary.
What is a fair price for a lab grown diamond?
A fair price has an IGI or GIA certificate you can verify independently, clearly listed specifications, and pricing consistent with 2–3 competing retailers. For a 1-carat VS2/G round excellent, prices across reputable retailers should be within 15–25% of each other.
Why are lab grown diamonds cheaper than natural?
Because they can be manufactured at scale. A lab grown diamond can be produced in 2–4 weeks using HPHT or CVD technology. As scale increased, supply outpaced demand and prices dropped. The diamonds themselves are physically identical to natural — the difference is origin and supply.
Is a lab grown diamond from Brillianteers the same quality as James Allen or Blue Nile?
Yes, if the specifications match. IGI certification is the independent verification — once you verify the certificate number on IGI’s website, quality is established regardless of where you bought it. Brillianteers sources from the same wholesale markets, built on 20+ years of industry relationships, which is why pricing tends to be 10–25% below competitors for equivalent stones.
Shop Lab Grown Diamond Rings at Brillianteers
Certified lab grown diamonds from 0.5 to 5+ carats. IGI certified. Transparent pricing.