Last Updated: May 2026
Diamond Price Calculator
Use our diamond price calculator to instantly estimate the value of a lab-grown diamond based on carat, color, clarity, and cut. Compare prices, understand market trends, and find the best value before you buy.
Diamond Price Calculator
Estimate lab-grown diamond prices by shape, carat, color, clarity and cut.
D
E
F
G
H
I
J
IF
VVS1
VVS2
VS1
VS2
SI1
SI2
Ideal
Excellent
Very Good
Good
Certification may apply a small premium.
Price Per Carat
$0
Estimated Total
$0
Assumptions
Lab-grown, retail estimate
This is an estimate for lab-grown diamonds based on internal market averages. Actual prices vary by specific stone features (polish, symmetry, fluorescence, measurements).
Why This Price? (Price Dynamics)
Shape & Premium:
Round cut carries a 2-5% premium due to high rough wastage.
Carat Weight Jump:
Prices increase exponentially at 1.0ct, 1.5ct, and 2.0ct thresholds.
Color & Clarity Impact:
Premium selection actively increases the final base multiplier.
Estimated Market Price Range
Depending on retailer markup and diamond specific specifications, prices usually fluctuate within this bracket:
$0 (Wholesale / Deal)
$0 (High Retail)
Matching Inventory Options
How Much Is a Lab Grown Diamond Worth?
Lab-grown diamond prices vary depending on carat weight, cut quality, color, clarity, and certification. In general, lab diamonds cost significantly less than natural diamonds while offering identical chemical, physical, and optical brilliance.
Ready to Find Your Perfect Diamond?
Now that you know the estimated price, explore real certified diamonds that match your exact parameters and budget.
Browse Lab Grown Diamonds InventoryDiamond Price Calculator
Estimate lab-grown diamond prices by shape, carat, color, clarity and cut.
D
E
F
G
H
I
J
IF
VVS1
VVS2
VS1
VS2
SI1
SI2
Ideal
Excellent
Very Good
Good
Certification may apply a small premium.
Price Per Carat
$0
Estimated Total
$0
Assumptions
Lab-grown, retail estimate
This is an estimate for lab-grown diamonds based on internal market averages. Actual
prices vary by specific stone features (polish, symmetry, fluorescence, measurements).
Diamond Price Estimator by Carat
Diamond prices increase rapidly with carat size. A 2 carat lab-grown diamond can cost significantly more than a 1 carat diamond of similar quality due to rarity and demand.
How to Calculate Diamond Price or Value
Diamond prices are determined by several key factors, including carat, color, clarity, cut, and certification. Use the sections below to understand how each factor affects the final price.
Carat (Weight)
Carat refers to the weight of the diamond, with 1 carat equal to 0.2 grams. Larger diamonds are significantly more expensive, as price increases exponentially with size. In the US, the average engagement ring diamond ranges from 1.0 to 1.2 carats.
Cut & Proportions
Cut quality and proportions determine how well a diamond reflects light. Grades such as Excellent or Ideal produce the most brilliance, while lower grades may appear dull. Choosing a well-cut diamond significantly improves its visual appeal.
Color
Diamond color is graded from D (colorless) to Z (noticeable color). For most buyers, diamonds in the G–H range offer the best balance between appearance and value.
Clarity
Clarity measures internal flaws (inclusions) and surface defects. Most experts recommend choosing diamonds in the VS1–VS2 range, as they appear clean to the naked eye while remaining cost-effective.
Certification
Diamond certification ensures the authenticity and quality grading of a diamond. The most recognized laboratory is GIA (Gemological Institute of America)
followed by IGI and HRD. Certified diamonds are generally more reliable and easier to resell.
Lab Diamond Price Chart
| Carat | Average Price | Typical Price Range | Guide |
|---|---|---|---|
| 1 ct | $1,800 | $1,200 - $2,500 | View Guide → |
| 1.25 ct | $2,500 | $1,800 - $3,500 | View Guide → |
| 1.75 ct | $3,900 | $3,000 - $5,500 | View Guide → |
| 2.5 ct | $6,500 | $5,000 - $8,500 | View Guide → |
| 4 ct | $12,000 | $10,000 - $15,000 | View Guide → |
| 5 ct | $18,000 | $16,000 - $22,000 | View Guide → |
Learn more about:
💎 Diamond Shapes
Compare popular diamond shapes and discover how each style affects appearance and value.
View Guide →
📄 Certification
Understand the differences between IGI and GIA diamond certificates.
View Guide →
🎨 Diamond Color
Learn the scale of D–Z color grades and where to find the best value sweet spot.
View Guide →
🔍 Diamond Clarity
Compare eye-clean VS, VVS, and SI clarity grades side by side.
View Guide →
✨ Diamond Cut
Learn how Excellent and Ideal cuts dramatically affect light performance and fire.
View Guide →
📏 Size Chart
Compare actual millimeter sizes across different shapes and carat weights.
View Guide →
⚖️ Lab vs Natural
The key optical, chemical, and value differences between lab-grown and mined diamonds.
View Guide →
🎨 G Color Diamond
Deep comparison of near-colorless diamond grades to maximize your savings.
View Guide →
🔎 VS1 vs VS2 Clarity
Which clarity grade is best for an eye-clean stone without overpaying?
View Guide →
Frequently Asked Questions
How accurate is the diamond price calculator?
Our calculator provides an estimated retail price based on current market trends for lab-grown diamonds. While it considers key factors such as carat, color, clarity, cut, and certification, actual prices may vary depending on the retailer, diamond shape, fluorescence, and market demand. Use the estimate as a reliable buying guide rather than a final quotation.
How much is a 1 carat lab grown diamond?
A high-quality 1 carat lab-grown diamond typically costs between $1,200 and $2,500, depending on its color, clarity, cut quality, and certification. G–H color with VS1–VS2 clarity generally offers the best balance of beauty and value.
How much is a 2 carat lab grown diamond?
A 2 carat lab-grown diamond usually ranges from $3,000 to $7,000. Premium stones with Excellent cut, higher color grades, and VVS clarity may exceed this range, while lower grades can cost less.
Why are lab grown diamonds cheaper than natural diamonds?
Lab-grown diamonds are chemically and physically identical to natural diamonds, but they are created in controlled laboratory environments. Lower production costs, greater supply, and the absence of mining expenses make them significantly more affordable than mined diamonds.
Does diamond certification affect value?
Yes. Certification helps verify a diamond’s quality and increases buyer confidence. Diamonds graded by respected laboratories such as IGI or GIA generally hold stronger market value and are easier to compare and resell.
Should I choose IGI or GIA certification?
For lab-grown diamonds, IGI is the most widely used certification and is trusted by many leading retailers. GIA also grades lab-grown diamonds and is internationally respected. Both provide reliable grading, though IGI is more common in today’s lab-grown diamond market.
What is the best diamond clarity for value?
For most buyers, VS1 and VS2 clarity grades offer the best value. These diamonds are typically eye-clean while costing significantly less than VVS grades, making them an excellent balance between appearance and price.
Can I resell a lab grown diamond?
Yes, lab-grown diamonds can be resold, but their resale value is generally lower than natural diamonds due to increasing production and market supply. If resale value is important, choosing a certified diamond from a reputable laboratory such as IGI or GIA can improve buyer confidence.