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Heart|Lab Grown|IGI

2.51ct E FL Heart Lab Grown Diamond

ID • E/FL • IGI LG825665156

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG825665156

Diamond specifications and retailer prices

From £925 GBP
$1,240 USD
As of October 30, 2026
Save £3,970 GBP (81%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £4,896 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 2.51ct lab-grown heart diamond

This 2.51ct lab-grown heart sits in the two to three carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG825665156 or 825665156. Listed at 19 retailers as of October 30, 2026, with prices from £925 to £4,896, a £3,970 spread on the same certified stone. Brilliant Earth lists it at £4,896. 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
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle38.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825665156
Dimensions9.30 × 8.35 × 5.42 mm
L/W Ratio1.11
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
Top View
9.30 mm8.35 mm2.51 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825665156
Side View
Table 60.0%Crown 36.3°Girdle: Slightly ThickPavilion 38.4°Culet: NoneDepth 58.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £4,896 GBP|Low: £925 GBP|High: £6,545 GBP|Avg: £2,897 GBP|-25.2%
Brilliant Earth
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 30, 2026
Retailer 6£925 GBP
Retailer 18£1,007 GBP
Retailer 3£1,048 GBP
Retailer 15£1,074 GBP
Retailer 14£1,202 GBP
Retailer 5£1,241 GBP
Retailer 2£1,512 GBP
Retailer 11£1,566 GBP
Retailer 8£1,701 GBP
Retailer 9£1,873 GBP
Retailer 17£2,007 GBP
Retailer 16£2,013 GBP
Retailer 12£2,770 GBP
Retailer 7£2,946 GBP
Retailer 13£3,468 GBP
Retailer 10£3,694 GBP
Retailer 19£3,766 GBP
Retailer 4£4,005 GBP
Brilliant Earth£4,896 GBP

34 data points across 19 retailers

19 retailers£925 GBP to £4,896 GBP

A
Cheapest Retailer
-
£925 GBP
$1,240 USD
A
Retailer 2
-
£1,007 GBP
$1,349 USD
View
A
Retailer 3
-
£1,048 GBP
$1,404 USD
View
Final sale: no returns
A
Retailer 4
-
£1,074 GBP
$1,439 USD
View
A
Retailer 5
-
£1,202 GBP
$1,610 USD
View
A
Retailer 6
-
£1,241 GBP
$1,663 USD
View
A
Retailer 7
-
£1,512 GBP
View
Retailer 8
-
£1,566 GBP
$2,098 USD
View
Price last confirmed 18 days ago
A
Retailer 9
-
£1,701 GBP
$2,279 USD
View
A
Retailer 10
-
£1,873 GBP
$2,510 USD
View
B+
Retailer 11
-
£2,007 GBP
$2,689 USD
View
B+
Retailer 12
-
£2,013 GBP
$2,697 USD
View
B+
Retailer 13
-
£2,770 GBP
ZAR 59,967 ZAR
View
B+
Retailer 14
-
£2,946 GBP
$3,947 USD
View
B+
Retailer 15
-
£3,468 GBP
View
B+
Retailer 16
-
£3,694 GBP
SGD 6,688 SGD
View
B+
Retailer 17
-
£3,766 GBP
$5,046 USD
View
B+
Retailer 18
-
£4,005 GBP
$5,366 USD
View
Most Expensive
B
Brilliant Earth
21434106A · Oct 30
£4,896 GBP
$6,560 USD
View
18 more retailers have this diamond
Prices start from £925 GBPSave up to £3,970 GBP

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.

A
2.51ct Heart
£925 GBP