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Heart|Lab Grown|IGI

1.51ct E IF Heart Lab Grown Diamond

ID • E/IF • IGI LG835608021

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG835608021

Diamond specifications and retailer prices

From £233 GBP
$310 USD
As of October 27, 2026
Save £2,002 GBP (90%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £2,235 GBP at Brilliant Earth · As of October 28, 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 E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG835608021 or 835608021. Listed at 21 retailers as of October 27, 2026, with prices from £233 to £2,235, a £2,002 spread on the same certified stone. Brilliant Earth lists it at £2,235. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.3°
Pavilion angle37.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG835608021
Dimensions6.66 × 7.89 × 4.72 mm
L/W Ratio1.18
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
6.66 mm7.89 mm1.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG835608021
Side View
Table 57.0%Crown 38.3°Girdle: STK-THKPavilion 37.8°Culet: NoneDepth 59.8%

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: Oct 27
Current: £2,235 GBP|Low: £218 GBP|High: £2,235 GBP|Avg: £756 GBP
Brilliant Earth
Retailer 2
Retailer 3
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Retailer 19
October 29, 2026
Retailer 18£233 GBP
Retailer 4£289 GBP
Retailer 5£289 GBP
Retailer 2£299 GBP
Retailer 8£320 GBP
Retailer 15£406 GBP
Retailer 19£471 GBP
Retailer 13£497 GBP
Retailer 14£511 GBP
Retailer 7£540 GBP
Retailer 12£674 GBP
Retailer 6£768 GBP
Retailer 17£888 GBP
Retailer 9£964 GBP
Retailer 10£1,112 GBP
Retailer 16£1,160 GBP
Retailer 3£1,162 GBP
Retailer 11£1,781 GBP
Brilliant Earth£2,235 GBP

28 data points across 19 retailers

21 retailers£233 GBP to £2,235 GBP

A
Cheapest Retailer
-
£233 GBP
$310 USD
A
Retailer 2
-
£284 GBP
$377 USD
View
Price last confirmed 30 days ago
A
Retailer 3
-
£289 GBP
$384 USD
View
A
Retailer 4
-
£289 GBP
$384 USD
View
A
Retailer 5
-
£299 GBP
View
A
Retailer 6
-
£320 GBP
$425 USD
View
Final sale: no returns
A
Retailer 7
-
£406 GBP
$540 USD
View
A
Retailer 8
-
£471 GBP
$626 USD
View
A
Retailer 9
-
£497 GBP
ZAR 10,664 ZAR
View
A
Retailer 10
-
£511 GBP
View
A
Retailer 11
-
£540 GBP
$717 USD
View
A
Retailer 12
-
£674 GBP
A$1,377 AUD
View
A
Retailer 13
-
£768 GBP
$1,020 USD
View
B+
Retailer 14
-
£888 GBP
$1,180 USD
View
B+
Retailer 15
-
£952 GBP
$1,265 USD
View
Price last confirmed 28 days ago
B+
Retailer 16
-
£964 GBP
$1,281 USD
View
B+
Retailer 17
-
£1,112 GBP
$1,477 USD
View
B+
Retailer 18
-
£1,160 GBP
View
B+
Retailer 19
-
£1,162 GBP
$1,544 USD
View
B
Retailer 20
-
£1,781 GBP
A$3,641 AUD
View
Price last confirmed 21 days ago
Most Expensive
B
Brilliant Earth
21696528A · Oct 28
£2,235 GBP
$2,970 USD
View
20 more retailers have this diamond
Prices start from £233 GBPSave up to £2,002 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
£233 GBP