Heart|Lab Grown|IGI

2.51ct D FL Heart Lab Grown Diamond

EX • D/FL • IGI LG816630834

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG816630834

Diamond specifications and retailer prices

From $1,315 USD

As of October 30, 2026

Save $4,042 USD (75%) vs most expensive(unlock to see where)

17 retailers carry this diamond

Most expensive: $5,357 USD at Taylor and Hart · As of October 31, 2026

View at Taylor and Hart

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 LG816630834 or 816630834. Listed at 17 retailers as of October 30, 2026, with prices from $1,315 to $5,357, a $4,042 spread on the same certified stone. Taylor and Hart lists it at $5,357. 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

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle33.8°

Pavilion angle40.2°

OriginLab Grown

Grading LabIGI

CertificateIGI LG816630834

Dimensions8.39 × 9.50 × 5.46 mm

L/W Ratio1.13

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

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG816630834

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 30

Current: $4,901 USD|Low: $1,315 USD|High: $7,373 USD|Avg: $3,299 USD|-29.3%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

Retailer 14

Taylor and Hart

November 1, 2026

Retailer 5$1,315 USD

Retailer 9$1,431 USD

Retailer 3$1,471 USD

Retailer 13$1,525 USD

Retailer 8$1,695 USD

Retailer 2$1,807 USD

Retailer 7$2,132 USD

Retailer 12$2,413 USD

Retailer 11$2,637 USD

Retailer 10$2,843 USD

Retailer 6$2,859 USD

Retailer 4$4,377 USD

Retailer 14$4,751 USD

Retailer 1$4,901 USD

Taylor and Hart$5,357 USD

44 data points across 15 retailers

17 retailers$1,315 USD to $5,357 USD

Cheapest Retailer

$1,315 USD

Retailer 2

$1,431 USD

View

Retailer 3

$1,471 USD

View

Final sale: no returns

Retailer 4

$1,525 USD

View

Retailer 5

$1,695 USD

View

Retailer 6

$1,807 USD

View

Retailer 7

$2,132 USD

£1,679 GBP

View

Retailer 8

$2,413 USD

View

Retailer 9

$2,555 USD

View

Price last confirmed 21 days ago

Retailer 10

$2,637 USD

View

B+

Retailer 11

$2,843 USD

View

B+

Retailer 12

$2,859 USD

View

B+

Retailer 13

$3,808 USD

View

B+

Retailer 14

$4,377 USD

View

Retailer 15

$4,751 USD

View

Retailer 16

$4,901 USD

£3,859 GBP

View

Most Expensive

Taylor and Hart

IPMAYPI · Oct 31

$5,357 USD

View

16 more retailers have this diamond

Prices start from $1,315 USDSave up to $4,042 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

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