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Heart|Lab Grown|IGI

1.51ct E IF Heart Lab Grown Diamond

EX • E/IF • IGI LG632488346

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG632488346

Diamond specifications and retailer prices

From £252 GBP
$335 USD
As of October 27, 2026
Save £2,362 GBP (90%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £2,613 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 LG632488346 or 632488346. Listed at 22 retailers as of October 27, 2026, with prices from £252 to £2,613, a £2,362 spread on the same certified stone. Brilliant Earth lists it at £2,613. 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 angle32.7°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG632488346
Dimensions7.11 × 7.11 × 8.03 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
7.11 mm7.11 mm1.51 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG632488346
Side View
Table 63.0%Crown 32.7°Girdle: MED-STKPavilion 39.4°Culet: NoneDepth 56.7%

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: £2,613 GBP|Low: £242 GBP|High: £2,613 GBP|Avg: £774 GBP
Brilliant Earth
Retailer 2
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Retailer 18
October 29, 2026
Retailer 18£252 GBP
Retailer 6£292 GBP
Retailer 3£312 GBP
Retailer 7£312 GBP
Retailer 11£323 GBP
Retailer 5£419 GBP
Retailer 13£428 GBP
Retailer 12£536 GBP
Retailer 2£557 GBP
Retailer 8£560 GBP
Retailer 9£772 GBP
Retailer 15£772 GBP
Retailer 16£969 GBP
Retailer 4£1,002 GBP
Retailer 10£1,220 GBP
Retailer 14£1,251 GBP
Retailer 17£1,783 GBP
Brilliant Earth£2,613 GBP

35 data points across 18 retailers

22 retailers£252 GBP to £2,613 GBP

A
Cheapest Retailer
-
£252 GBP
$335 USD
A
Retailer 2
-
£281 GBP
$374 USD
View
Final sale: no returns
A
Retailer 3
-
£292 GBP
$389 USD
View
A
Retailer 4
-
£312 GBP
$415 USD
View
A
Retailer 5
-
£312 GBP
$415 USD
View
A
Retailer 6
-
£323 GBP
View
A
Retailer 7
-
£419 GBP
$558 USD
View
A
Retailer 8
-
£428 GBP
$570 USD
View
A
Retailer 9
-
£536 GBP
ZAR 11,529 ZAR
View
A
Retailer 10
-
£557 GBP
View
A
Retailer 11
-
£560 GBP
$746 USD
View
A
Retailer 12
-
£772 GBP
$1,028 USD
View
A
Retailer 13
-
£772 GBP
$1,028 USD
View
B+
Retailer 14
-
£969 GBP
$1,290 USD
View
B+
Retailer 15
-
£1,002 GBP
$1,335 USD
View
B+
Retailer 16
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£1,035 GBP
$1,379 USD
View
B+
Retailer 17
-
£1,178 GBP
$1,569 USD
View
B+
Retailer 18
-
£1,220 GBP
$1,624 USD
View
B+
Retailer 19
-
£1,251 GBP
View
B
Retailer 20
-
£1,783 GBP
A$3,652 AUD
View
Price last confirmed 20 days ago
B
Retailer 21
-
£2,089 GBP
View
Most Expensive
B
Brilliant Earth
13387894A · Oct 28
£2,613 GBP
$3,480 USD
View
21 more retailers have this diamond
Prices start from £252 GBPSave up to £2,362 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
£252 GBP