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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 $224 USD
As of October 23, 2026
Save $1,046 USD (82%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $1,480 USD 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
Color
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: $1,480 USD|Low: $224 USD|High: $1,480 USD|Avg: $678 USD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
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Retailer 10
Retailer 11
Retailer 12
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Retailer 14
Retailer 15
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Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
October 29, 2026
Retailer 3$224 USD
Retailer 8$251 USD
Retailer 19$260 USD
Retailer 22$278 USD
Retailer 11$307 USD
Retailer 16$326 USD
Retailer 2$452 USD
Retailer 20$470 USD
Retailer 5$473 USD
Retailer 7$511 USD
Retailer 17$515 USD
Retailer 12$531 USD
Retailer 13$649 USD
Retailer 21$893 USD
Retailer 4$896 USD
Retailer 14$901 USD
Retailer 9$946 USD
Retailer 18$1,115 USD
Retailer 15$1,125 USD
Retailer 6$1,130 USD
Retailer 10$1,270 USD
Brilliant Earth$1,480 USD

22 data points across 22 retailers

22 retailers$224 USD to $1,270 USD

A
Cheapest Retailer
-
$224 USD
A
Retailer 2
-
$251 USD
View
Final sale: no returns
A
Retailer 3
-
$260 USD
View
A
Retailer 4
-
$278 USD
View
A
Retailer 5
-
$307 USD
HK$2,400 HKD
View
A
Retailer 6
-
$326 USD
£256 GBP
View
A
Retailer 7
-
$452 USD
€430 EUR
View
A
Retailer 8
-
$470 USD
ZAR 7,590 ZAR
View
A
Retailer 9
-
$473 USD
View
A
Retailer 10
-
$511 USD
View
A
Retailer 11
-
$515 USD
£405 GBP
View
B+
Retailer 12
-
$531 USD
View
B+
Retailer 13
-
$649 USD
A$998 AUD
View
B+
Retailer 14
-
$893 USD
View
B
Retailer 15
-
$896 USD
View
B
Retailer 16
-
$901 USD
SGD 1,218 SGD
View
B
Retailer 17
-
$946 USD
View
B
Retailer 18
-
$1,115 USD
£878 GBP
View
B
Retailer 19
-
$1,125 USD
View
B
Retailer 20
-
$1,130 USD
View
B
Retailer 21
-
$1,270 USD
View
Most Expensive
B
Brilliant Earth
21808394A · Oct 14
$1,480 USD
View
Price last confirmed 14 days ago
21 more retailers have this diamond
Prices start from $224 USDSave up to $1,046 USD

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
$224 USD