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).

Tip: Higher carat, better clarity, and colorless diamonds will significantly increase the price.

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 similar appearance and brilliance.

Find Your Perfect Diamond

Now that you know the estimated price, explore real diamonds that match your budget.

Browse Lab Grown Diamonds

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).

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.

Diamond Shape

Diamonds come in many shapes, including round, cushion, oval, emerald, princess, pear, Asscher, radiant, marquise, and heart. Among them, round diamonds are typically the most expensive due to higher demand and cutting loss.

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.

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.

Lab Diamond Price Chart

Carat Estimated Price Range
0.5 ct $500 - $900
1 ct $1,000 - $2,500
2 ct $3,000 - $7,000
3 ct $8,000+

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.

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.

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Frequently Asked Questions

How accurate is the diamond price calculator?

The calculator provides estimated retail pricing based on average market data for lab-grown diamonds.

Why are lab-grown diamonds cheaper?

Lab-grown diamonds cost less because they are created in controlled environments and have lower supply chain costs than natural diamonds.

Does IGI certification affect diamond price?

Yes. Certified diamonds may carry a small premium because grading increases buyer confidence and resale value.

What is the best clarity for value?

VS1 and VS2 clarity grades are often considered the best balance between appearance and affordability.

Is this diamond calculator accurate?

Mostly yes, but only as an estimate. Real diamond prices vary a lot based on cut quality, certification (IGI/GIA), polish, symmetry, and even retailer markup. Two “identical” diamonds can differ by thousands of dollars. So use it as a guide, not a final price.

Why are lab grown diamonds cheaper?

Because they are made in a lab, not mined. That means:

  • Much lower production cost
  • No mining scarcity factor
  • Faster supply
  • Less branding/rarity premium

They are chemically identical to natural diamonds, just not rare.

How much is a 2 carat lab diamond?

Typically:

  • Around $2,000 – $5,000 for common good quality stones
  • Can go up to $7,000+ for higher color/clarity or premium cuts
  • Very cheap ones may start around ~$1,000+ but often lower specs

Average market price is roughly ~$2,400–$3,000 range.

Does certification affect diamond value?

Yes, a lot.

  • IGI / GIA / GCAL certified = trusted, higher value
  • No certificate or weak labs = lower price & higher risk
  • Certification doesn’t change the diamond, but it changes trust and resale value

Think of it like a “passport” for the diamond.

What is the best diamond clarity?

Best “value sweet spot”:

  • VS1 or VS2 (recommended) → eye-clean, good price

Higher grades:

  • VVS1 / VVS2 → very clean but expensive, usually unnecessary
    Lower:
  • SI1 → can be okay but risky at 2ct (may show inclusions)

Simple rule: VS2 is the best balance for most buyers