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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 $447 AUD
$314 USD
As of October 25, 2026
Save $1,356 AUD (75%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,093 AUD 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 D colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG645423250 or 645423250. Listed at 14 retailers as of October 25, 2026, with a 303% 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
D
Colour
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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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 25
Current: $2,093 AUD|Low: $404 AUD|High: $2,235 AUD|Avg: $1,108 AUD|-6.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 7$447 AUD
Retailer 8$501 AUD
Retailer 9$612 AUD
Retailer 12$747 AUD
Retailer 4$749 AUD
Retailer 2$853 AUD
Retailer 10$930 AUD
Retailer 6$1,375 AUD
Retailer 3$1,512 AUD
Retailer 11$1,760 AUD
Retailer 5$1,803 AUD
Brilliant Earth$2,093 AUD

37 data points across 12 retailers

14 retailers$447 AUD to $1,803 AUD

Retailer 1
-
$399 AUD
$280 USD
Price last confirmed 33 days ago
Retailer 2
-
$447 AUD
$314 USD
View
Price last confirmed 18 days ago
A
Retailer 3
-
$447 AUD
$314 USD
View
Retailer 4
-
$501 AUD
£277 GBP
View
Price last confirmed 13 days ago
A
Retailer 5
-
$612 AUD
$430 USD
View
A
Retailer 6
-
$747 AUD
$525 USD
View
B+
Retailer 7
-
$749 AUD
$526 USD
View
B+
Retailer 8
-
$853 AUD
£472 GBP
View
B+
Retailer 9
-
$930 AUD
$653 USD
View
B
Retailer 10
-
$1,375 AUD
$966 USD
View
Retailer 11
-
$1,512 AUD
$1,062 USD
View
Price last confirmed 12 days ago
B
Retailer 12
-
$1,760 AUD
$1,236 USD
View
B
Retailer 13
-
$1,803 AUD
£997 GBP
View
Most Expensive
Brilliant Earth
11351475A · Oct 14
$2,093 AUD
$1,470 USD
View
Price last confirmed 16 days ago
13 more retailers have this diamond
Prices start from $447 AUDSave up to $1,356 AUD

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
$447 AUD