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Heart|Lab Grown|IGI

1.51ct E IF Heart Lab Grown Diamond

EX • E/IF • IGI LG735517685

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG735517685

Diamond specifications and retailer prices

From £278 GBP
$370 USD
As of October 27, 2026
Save £1,074 GBP (79%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £1,352 GBP at MOH London · As of October 29, 2026
View at MOH London

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 LG735517685 or 735517685. Listed at 21 retailers as of October 27, 2026, with prices from £278 to £1,352, a £1,074 spread on the same certified stone. MOH London lists it at £1,352. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.8°
Pavilion angle36.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG735517685
Dimensions7.76 × 7.76 × 7.37 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
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
7.76 mm7.76 mm1.51 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG735517685
Side View
Table 60.0%Crown 40.8°Girdle: MED-THKPavilion 36.7°Culet: NoneDepth 57.5%

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: Oct 27
Current: £1,352 GBP|Low: £267 GBP|High: £1,362 GBP|Avg: £615 GBP|-0.6%
MOH London
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
October 29, 2026
Retailer 13£278 GBP
Retailer 5£322 GBP
Retailer 6£345 GBP
Retailer 14£345 GBP
Retailer 7£357 GBP
Retailer 10£458 GBP
Retailer 4£462 GBP
Retailer 11£552 GBP
Retailer 8£592 GBP
Retailer 9£618 GBP
Retailer 2£799 GBP
Retailer 12£1,010 GBP
Retailer 3£1,200 GBP
MOH London£1,352 GBP

35 data points across 14 retailers

21 retailers£278 GBP to £1,352 GBP

A
Cheapest Retailer
-
£278 GBP
$370 USD
A
Retailer 2
-
£310 GBP
$413 USD
View
Final sale: no returns
A
Retailer 3
-
£322 GBP
$429 USD
View
A
Retailer 4
-
£345 GBP
$459 USD
View
A
Retailer 5
-
£345 GBP
$459 USD
View
A
Retailer 6
-
£357 GBP
View
A
Retailer 7
-
£458 GBP
$610 USD
View
A
Retailer 8
-
£462 GBP
$615 USD
View
A
Retailer 9
-
£535 GBP
$712 USD
View
A
Retailer 10
-
£552 GBP
€700 EUR
View
A
Retailer 11
-
£592 GBP
ZAR 12,730 ZAR
View
A
Retailer 12
-
£618 GBP
View
A
Retailer 13
-
£782 GBP
$1,041 USD
View
A
Retailer 14
-
£799 GBP
A$1,637 AUD
View
B+
Retailer 15
-
£1,010 GBP
$1,345 USD
View
B+
Retailer 16
-
£1,105 GBP
$1,472 USD
View
B+
Retailer 17
-
£1,107 GBP
$1,474 USD
View
B+
Retailer 18
-
£1,137 GBP
$1,514 USD
View
B+
Retailer 19
-
£1,200 GBP
$1,598 USD
View
B
Retailer 20
-
£1,301 GBP
$1,732 USD
View
Most Expensive
B+
MOH London
LG735517685 · Oct 29
£1,352 GBP
View
20 more retailers have this diamond
Prices start from £278 GBPSave up to £1,074 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
£278 GBP