CaratHunter
Plans
Heart|Lab Grown|IGI

2.51ct E FL Heart Lab Grown Diamond

ID • E/FL • IGI LG836614497

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG836614497

Diamond specifications and retailer prices

From £931 GBP
$1,240 USD
As of October 30, 2026
Save £3,995 GBP (81%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £4,926 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 LG836614497 or 836614497. Listed at 19 retailers as of October 30, 2026, with prices from £931 to £4,926, a £3,995 spread on the same certified stone. Brilliant Earth lists it at £4,926. 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 angle37.1°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836614497
Dimensions8.35 × 9.38 × 5.51 mm
L/W Ratio1.12
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
8.35 mm9.38 mm2.51 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836614497
Side View
Table 60.0%Crown 37.1°Girdle: STK-THKPavilion 39.5°Culet: NoneDepth 58.7%

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: £4,926 GBP|Low: £931 GBP|High: £6,586 GBP|Avg: £2,707 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£931 GBP
Retailer 19£1,013 GBP
Retailer 7£1,054 GBP
Retailer 16£1,081 GBP
Retailer 2£1,096 GBP
Retailer 15£1,209 GBP
Retailer 5£1,249 GBP
Retailer 12£1,522 GBP
Retailer 11£1,575 GBP
Retailer 9£1,711 GBP
Retailer 18£2,019 GBP
Retailer 17£2,025 GBP
Retailer 10£2,070 GBP
Retailer 13£2,787 GBP
Retailer 8£2,964 GBP
Retailer 14£3,490 GBP
Retailer 3£3,789 GBP
Retailer 4£4,029 GBP
Brilliant Earth£4,926 GBP

23 data points across 19 retailers

19 retailers£931 GBP to £4,926 GBP

A
Cheapest Retailer
-
£931 GBP
$1,240 USD
A
Retailer 2
-
£1,013 GBP
$1,349 USD
View
A
Retailer 3
-
£1,054 GBP
$1,404 USD
View
Final sale: no returns
A
Retailer 4
-
£1,081 GBP
$1,439 USD
View
A
Retailer 5
-
£1,096 GBP
View
A
Retailer 6
-
£1,209 GBP
$1,610 USD
View
A
Retailer 7
-
£1,249 GBP
$1,663 USD
View
A
Retailer 8
-
£1,522 GBP
View
Retailer 9
-
£1,575 GBP
$2,098 USD
View
Price last confirmed 17 days ago
A
Retailer 10
-
£1,711 GBP
$2,279 USD
View
B+
Retailer 11
-
£2,019 GBP
$2,689 USD
View
B+
Retailer 12
-
£2,025 GBP
$2,697 USD
View
B+
Retailer 13
-
£2,070 GBP
$2,756 USD
View
B+
Retailer 14
-
£2,787 GBP
ZAR 59,967 ZAR
View
B+
Retailer 15
-
£2,964 GBP
$3,947 USD
View
B+
Retailer 16
-
£3,490 GBP
View
B+
Retailer 17
-
£3,789 GBP
$5,046 USD
View
B+
Retailer 18
-
£4,029 GBP
$5,366 USD
View
Most Expensive
B
Brilliant Earth
21738580A · Oct 30
£4,926 GBP
$6,560 USD
View
18 more retailers have this diamond
Prices start from £931 GBPSave up to £3,995 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
£931 GBP