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Heart|Lab Grown|IGI

1.51ct D VS2 Heart Lab Grown Diamond

EX • D/VS2 • IGI LG645423250

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG645423250

Diamond specifications and retailer prices

From $294 USD
As of November 1, 2026
Save $1,066 USD (78%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,360 USD at Brilliant Earth · As of October 31, 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 D colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG645423250 or 645423250. Listed at 16 retailers as of October 31, 2026, with prices from $294 to $1,360, a $1,066 spread on the same certified stone. Brilliant Earth lists it at $1,360. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Color
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG645423250
Dimensions7.10 × 7.89 × 4.64 mm
L/W Ratio1.11
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.10 mm7.89 mm1.51 ctD / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG645423250
Side View
Table 58.0%Crown 36.6°Girdle: MED-STKPavilion 39.6°Culet: NoneDepth 58.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $1,360 USD|Low: $284 USD|High: $1,570 USD|Avg: $777 USD|-13.4%
Brilliant Earth
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
November 2, 2026
Retailer 7$294 USD
Retailer 12$314 USD
Retailer 13$352 USD
Retailer 10$425 USD
Retailer 4$525 USD
Retailer 6$526 USD
Retailer 2$599 USD
Retailer 14$653 USD
Retailer 11$966 USD
Retailer 9$1,010 USD
Retailer 5$1,062 USD
Retailer 3$1,236 USD
Retailer 8$1,260 USD
Brilliant Earth$1,360 USD

38 data points across 14 retailers

16 retailers$294 USD to $1,360 USD

Retailer 1
-
$280 USD
Price last confirmed 35 days ago
A
Retailer 2
-
$294 USD
View
Retailer 3
-
$314 USD
View
Price last confirmed 20 days ago
Retailer 4
-
$314 USD
View
Price last confirmed 7 days ago
Retailer 5
-
$352 USD
£277 GBP
View
Price last confirmed 16 days ago
A
Retailer 6
-
$425 USD
View
B+
Retailer 7
-
$525 USD
View
B+
Retailer 8
-
$526 USD
View
B+
Retailer 9
-
$599 USD
£472 GBP
View
B+
Retailer 10
-
$653 USD
View
B
Retailer 11
-
$966 USD
View
B
Retailer 12
-
$1,010 USD
View
Retailer 13
-
$1,062 USD
View
Price last confirmed 14 days ago
B
Retailer 14
-
$1,236 USD
View
B
Retailer 15
-
$1,260 USD
£992 GBP
View
Most Expensive
B
Brilliant Earth
11351475A · Oct 31
$1,360 USD
View
15 more retailers have this diamond
Prices start from $294 USDSave up to $1,066 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
$294 USD