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Heart|Lab Grown|IGI

1.51ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG836620979

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG836620979

Diamond specifications and retailer prices

From £464 GBP
As of November 4, 2026
Save £2,077 GBP (82%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £2,541 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.51ct lab-grown heart diamond

This 1.51ct lab-grown heart sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG836620979 or 836620979. Listed at 19 retailers as of November 4, 2026, with prices from £464 to £2,541, a £2,077 spread on the same certified stone. Brilliant Earth lists it at £2,541. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.3°
Pavilion angle36.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836620979
Dimensions7.07 × 7.83 × 4.56 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
7.07 mm7.83 mm1.51 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836620979
Side View
Table 59.0%Crown 38.3°Girdle: Slightly ThickPavilion 36.9°Culet: NoneDepth 58.2%

Caratlytics Score

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A
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: Nov 4
Current: £2,541 GBP|Low: £464 GBP|High: £3,585 GBP|Avg: £1,349 GBP|-29.1%
Brilliant Earth
Retailer 2
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Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 18
November 5, 2026
Retailer 10£464 GBP
Retailer 15£504 GBP
Retailer 13£533 GBP
Retailer 5£575 GBP
Retailer 16£670 GBP
Retailer 18£830 GBP
Retailer 17£857 GBP
Retailer 14£880 GBP
Retailer 11£892 GBP
Retailer 9£1,033 GBP
Retailer 3£1,261 GBP
Retailer 12£1,512 GBP
Retailer 8£1,764 GBP
Retailer 4£1,856 GBP
Retailer 6£1,930 GBP
Retailer 7£2,035 GBP
Retailer 2£2,259 GBP
Brilliant Earth£2,541 GBP

30 data points across 18 retailers

19 retailers£464 GBP to £2,541 GBP

A
Cheapest Retailer
-
£464 GBP
A
Retailer 2
-
£504 GBP
View
A
Retailer 3
-
£533 GBP
View
Final sale: no returns
A
Retailer 4
-
£575 GBP
View
Retailer 5
-
£582 GBP
View
Price last confirmed 20 days ago
A
Retailer 6
-
£670 GBP
View
A
Retailer 7
-
£830 GBP
View
A
Retailer 8
-
£857 GBP
View
A
Retailer 9
-
£880 GBP
View
B+
Retailer 10
-
£892 GBP
View
B+
Retailer 11
-
£1,033 GBP
View
B+
Retailer 12
-
£1,261 GBP
View
B+
Retailer 13
-
£1,512 GBP
View
B+
Retailer 14
-
£1,764 GBP
View
B+
Retailer 15
-
£1,856 GBP
View
B+
Retailer 16
-
£1,930 GBP
View
B
Retailer 17
-
£2,035 GBP
View
B
Retailer 18
-
£2,259 GBP
View
Most Expensive
B
Brilliant Earth
21590133A · Nov 4
£2,541 GBP
$3,430 USD
View
18 more retailers have this diamond
Prices start from £464 GBPSave up to £2,077 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
1.51ct Heart
£464 GBP