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Heart|Lab Grown|IGI

1.51ct E VS1 Heart Lab Grown Diamond

ID • E/VS1 • IGI LG840612257

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG840612257

Diamond specifications and retailer prices

From £167 GBP
$224 USD
As of October 23, 2026
Save £781 GBP (82%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,105 GBP at Brilliant Earth · As of October 14, 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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG840612257 or 840612257. Listed at 22 retailers as of October 23, 2026, with a 467% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.5°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840612257
Dimensions7.20 × 7.75 × 4.79 mm
L/W Ratio1.08
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.20 mm7.75 mm1.51 ctE / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840612257
Side View
Table 65.0%Crown 37.5°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 61.8%

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 23
Current: £1,105 GBP|Low: £167 GBP|High: £1,105 GBP|Avg: £506 GBP
Brilliant Earth
Retailer 2
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Retailer 22
October 29, 2026
Retailer 3£167 GBP
Retailer 8£187 GBP
Retailer 19£194 GBP
Retailer 22£207 GBP
Retailer 11£229 GBP
Retailer 16£243 GBP
Retailer 2£337 GBP
Retailer 20£351 GBP
Retailer 5£353 GBP
Retailer 7£381 GBP
Retailer 17£384 GBP
Retailer 12£396 GBP
Retailer 13£484 GBP
Retailer 21£666 GBP
Retailer 4£669 GBP
Retailer 14£673 GBP
Retailer 9£706 GBP
Retailer 18£832 GBP
Retailer 15£840 GBP
Retailer 6£843 GBP
Retailer 10£948 GBP
Brilliant Earth£1,105 GBP

22 data points across 22 retailers

22 retailers£167 GBP to £948 GBP

A
Cheapest Retailer
-
£167 GBP
$224 USD
A
Retailer 2
-
£187 GBP
$251 USD
View
Final sale: no returns
A
Retailer 3
-
£194 GBP
$260 USD
View
A
Retailer 4
-
£207 GBP
$278 USD
View
A
Retailer 5
-
£229 GBP
HK$2,400 HKD
View
A
Retailer 6
-
£243 GBP
View
A
Retailer 7
-
£337 GBP
€430 EUR
View
Retailer 8
-
£351 GBP
ZAR 7,590 ZAR
View
Price last confirmed 7 days ago
A
Retailer 9
-
£353 GBP
$473 USD
View
A
Retailer 10
-
£381 GBP
$511 USD
View
A
Retailer 11
-
£384 GBP
View
B+
Retailer 12
-
£396 GBP
$531 USD
View
B+
Retailer 13
-
£484 GBP
A$998 AUD
View
B+
Retailer 14
-
£666 GBP
$893 USD
View
B
Retailer 15
-
£669 GBP
$896 USD
View
B
Retailer 16
-
£673 GBP
SGD 1,218 SGD
View
B
Retailer 17
-
£706 GBP
$946 USD
View
B
Retailer 18
-
£832 GBP
View
B
Retailer 19
-
£840 GBP
$1,125 USD
View
B
Retailer 20
-
£843 GBP
$1,130 USD
View
B
Retailer 21
-
£948 GBP
$1,270 USD
View
Most Expensive
Brilliant Earth
21808394A · Oct 14
£1,105 GBP
$1,480 USD
View
Price last confirmed 16 days ago
21 more retailers have this diamond
Prices start from £167 GBPSave up to £781 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
£167 GBP