Heart|Lab Grown|IGI

2.51ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG816602374

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG816602374

Diamond specifications and retailer prices

From $2,510 USD

As of October 31, 2026

Save $5,003 USD (67%) vs most expensive(unlock to see where)

7 retailers carry this diamond

Most expensive: $7,513 USD at Blue Nile · As of October 31, 2026

View at Blue Nile

About this 2.51ct lab-grown heart diamond

This 2.51ct lab-grown heart sits in the two to three carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG816602374 or 816602374. Listed at 7 retailers as of October 31, 2026, with prices from $2,510 to $7,513, a $5,003 spread on the same certified stone. Blue Nile lists it at $7,513. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

2.51

Carat

Color

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle36.6°

Pavilion angle38°

OriginLab Grown

Grading LabIGI

CertificateIGI LG816602374

Dimensions9.19 × 8.63 × 5.34 mm

L/W Ratio1.06

Girdle conditionFaceted

Cert comments

As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG816602374

Side View

Caratlytics Score

How it works →

Excellent

Excellent quality and great value

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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31

Current: $7,513 USD|Low: $1,591 USD|High: $11,930 USD|Avg: $4,893 USD|-32.4%

Blue Nile

Retailer 2

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October 30, 2026

Retailer 4$1,591 USD

Retailer 12$1,649 USD

Retailer 7$1,689 USD

Retailer 16$2,080 USD

Retailer 18$2,103 USD

Retailer 11$2,510 USD

Retailer 8$2,903 USD

Retailer 13$3,006 USD

Retailer 3$3,366 USD

Retailer 17$3,958 USD

Retailer 5$4,039 USD

Retailer 14$6,102 USD

Retailer 2$6,580 USD

Retailer 6$7,251 USD

Retailer 10$7,326 USD

Blue Nile$7,513 USD

Retailer 9$8,571 USD

Retailer 15$11,350 USD

10 data points across 18 retailers

7 retailers$2,510 USD to $7,513 USD

Retailer 1

$1,649 USD

Price last confirmed 20 days ago

Retailer 2

$2,510 USD

View

Retailer 3

$3,006 USD

View

Price last confirmed 19 days ago

Retailer 4

$3,958 USD

View

Price last confirmed 21 days ago

Retailer 5

$6,102 USD

£4,805 GBP

View

Price last confirmed 20 days ago

Retailer 6

$6,580 USD

View

Most Expensive

Blue Nile

30352854 · Oct 31

$7,513 USD

View

6 more retailers have this diamond

Prices start from $2,510 USDSave up to $5,003 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

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2.51ct Heart

$2,510 USD