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Heart|Lab Grown|IGI

1.51ct E IF Heart Lab Grown Diamond

ID • E/IF • IGI LG811645844

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG811645844

Diamond specifications and retailer prices

From £384 GBP
$511 USD
As of October 28, 2026
Save £1,207 GBP (76%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,590 GBP at Brilliance · As of October 27, 2026
View at Brilliance

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 LG811645844 or 811645844. Listed at 10 retailers as of October 27, 2026, with prices from £384 to £1,590, a £1,207 spread on the same certified stone. Brilliance lists it at £1,590. 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
SymmetryVery Good
FluorescenceNone
Crown angle37.5°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811645844
Dimensions7.70 × 7.20 × 4.68 mm
L/W Ratio1.07
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
7.70 mm7.20 mm1.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG811645844
Side View
Table 58.0%Crown 37.5°Girdle: MED-THKPavilion 39.4°Culet: NoneDepth 60.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: £1,590 GBP|Low: £269 GBP|High: £1,741 GBP|Avg: £947 GBP|-8.6%
Brilliance
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 10£384 GBP
Retailer 5£571 GBP
Retailer 7£571 GBP
Retailer 4£700 GBP
Retailer 3£730 GBP
Retailer 8£804 GBP
Retailer 6£1,143 GBP
Retailer 9£1,390 GBP
Retailer 2£1,570 GBP
Brilliance£1,590 GBP

39 data points across 10 retailers

10 retailers£384 GBP to £1,590 GBP

A
Cheapest Retailer
-
£384 GBP
$511 USD
Final sale: no returns
A
Retailer 2
-
£571 GBP
$760 USD
View
A
Retailer 3
-
£571 GBP
$760 USD
View
A
Retailer 4
-
£700 GBP
View
A
Retailer 5
-
£730 GBP
ZAR 15,715 ZAR
View
A
Retailer 6
-
£804 GBP
$1,071 USD
View
B
Retailer 7
-
£1,143 GBP
$1,522 USD
View
B+
Retailer 8
-
£1,390 GBP
$1,851 USD
View
B
Retailer 9
-
£1,570 GBP
View
Most Expensive
B
Brilliance
D44758911 · Oct 27
£1,590 GBP
$2,118 USD
View
9 more retailers have this diamond
Prices start from £384 GBPSave up to £1,207 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
£384 GBP