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Heart|Lab Grown|IGI

2.51ct F IF Heart Lab Grown Diamond

ID • F/IF • IGI LG853638315

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG853638315

Diamond specifications and retailer prices

From £667 GBP
As of November 4, 2026
Save £2,800 GBP (81%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,467 GBP at Brilliant Earth · As of November 3, 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 F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG853638315 or 853638315. Listed at 13 retailers as of November 3, 2026, with prices from £667 to £3,467, a £2,800 spread on the same certified stone. Brilliant Earth lists it at £3,467. 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
F
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle38°
OriginLab Grown
Grading LabIGI
CertificateIGI LG853638315
Dimensions8.42 × 9.27 × 5.37 mm
L/W Ratio1.10
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
8.42 mm9.27 mm2.51 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG853638315
Side View
Table 60.0%Crown 36.6°Girdle: STK-THKPavilion 38°Culet: NoneDepth 57.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £1,081 GBP|Low: £667 GBP|High: £2,664 GBP|Avg: £1,407 GBP|-0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 2£667 GBP
Retailer 5£801 GBP
Retailer 4£824 GBP
Retailer 7£841 GBP
Retailer 1£1,081 GBP
Retailer 10£1,113 GBP
Retailer 11£1,145 GBP
Retailer 9£1,634 GBP
Retailer 6£1,836 GBP
Retailer 3£2,272 GBP
Retailer 12£2,390 GBP
Retailer 8£2,664 GBP

5 data points across 12 retailers

13 retailers£667 GBP to £3,467 GBP

A
Cheapest Retailer
-
£667 GBP
A
Retailer 2
-
£801 GBP
View
A
Retailer 3
-
£824 GBP
View
A
Retailer 4
-
£841 GBP
View
A
Retailer 5
-
£1,081 GBP
View
A
Retailer 6
-
£1,113 GBP
View
A
Retailer 7
-
£1,145 GBP
View
A
Retailer 8
-
£1,634 GBP
View
A
Retailer 9
-
£1,836 GBP
View
B+
Retailer 10
-
£2,272 GBP
View
B+
Retailer 11
-
£2,390 GBP
View
B+
Retailer 12
-
£2,664 GBP
View
Most Expensive
B+
Brilliant Earth
22437121A · Nov 3
£3,467 GBP
$4,680 USD
View
12 more retailers have this diamond
Prices start from £667 GBPSave up to £2,800 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
£667 GBP