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Heart|Lab Grown|IGI

1.51ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG836619131

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG836619131

Diamond specifications and retailer prices

From £706 GBP
As of November 4, 2026
Save £2,887 GBP (80%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £3,593 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 LG836619131 or 836619131. Listed at 14 retailers as of November 4, 2026, with prices from £706 to £3,593, a £2,887 spread on the same certified stone. Brilliant Earth lists it at £3,593. 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 angle34.7°
Pavilion angle38°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836619131
Dimensions8.06 × 7.10 × 4.53 mm
L/W Ratio1.14
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
8.06 mm7.10 mm1.51 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836619131
Side View
Table 60.0%Crown 34.7°Girdle: MED-STKPavilion 38°Culet: NoneDepth 56.2%

Caratlytics Score

How it works →
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: £3,593 GBP|Low: £706 GBP|High: £3,593 GBP|Avg: £1,767 GBP
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
November 5, 2026
Retailer 8£706 GBP
Retailer 14£734 GBP
Retailer 11£893 GBP
Retailer 4£896 GBP
Retailer 7£994 GBP
Retailer 6£1,144 GBP
Retailer 12£1,400 GBP
Retailer 13£1,583 GBP
Retailer 5£1,950 GBP
Retailer 10£2,116 GBP
Retailer 9£2,158 GBP
Retailer 2£2,451 GBP
Retailer 3£2,505 GBP
Brilliant Earth£3,593 GBP

11 data points across 14 retailers

14 retailers£706 GBP to £3,593 GBP

A
Cheapest Retailer
-
£706 GBP
A
Retailer 2
-
£734 GBP
View
Final sale: no returns
A
Retailer 3
-
£893 GBP
View
B+
Retailer 4
-
£896 GBP
View
B+
Retailer 5
-
£994 GBP
View
B+
Retailer 6
-
£1,144 GBP
View
B+
Retailer 7
-
£1,400 GBP
View
B
Retailer 8
-
£1,583 GBP
View
B
Retailer 9
-
£1,950 GBP
View
B
Retailer 10
-
£2,116 GBP
View
B+
Retailer 11
-
£2,158 GBP
View
B
Retailer 12
-
£2,451 GBP
View
B
Retailer 13
-
£2,505 GBP
View
Most Expensive
B
Brilliant Earth
22318645A · Nov 4
£3,593 GBP
$4,850 USD
View
13 more retailers have this diamond
Prices start from £706 GBPSave up to £2,887 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
£706 GBP