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Heart|Lab Grown|IGI

1.23ct D VS2 Heart Lab Grown Diamond

EX • D/VS2 • IGI LG837603688

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG837603688

Diamond specifications and retailer prices

From $374 NZD
As of November 4, 2026
Save $204 NZD (35%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $578 NZD at Loose Grown Diamond · As of November 4, 2026
View at Loose Grown Diamond

About this 1.23ct lab-grown heart diamond

This 1.23ct lab-grown heart sits in the classic one-carat band, graded D colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG837603688 or 837603688. Listed at 2 retailers as of November 4, 2026, with prices from $374 to $578, a $204 spread on the same certified stone. Loose Grown Diamond lists it at $578. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
D
Colour
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837603688
Dimensions6.78 × 7.50 × 4.27 mm
L/W Ratio1.11
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.78 mm7.50 mm1.23 ctD / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837603688
Side View
Table 58.0%Crown 34.6°Girdle: MED-STKPavilion 39.3°Culet: NoneDepth 56.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: $578 NZD|Low: $371 NZD|High: $789 NZD|Avg: $619 NZD|+3.8%
Loose Grown Diamond
Retailer 2
Retailer 3
October 27, 2026
Retailer 2$374 NZD
Loose Grown Diamond$578 NZD
Retailer 3$789 NZD

4 data points across 3 retailers

2 retailers$374 NZD to $578 NZD

A
Cheapest Retailer
-
$374 NZD
Final sale: no returns
Most Expensive
B+
Loose Grown Diamond
837603688 · Nov 4
$578 NZD
$326 USD
View
1 more retailer has this diamond
Prices start from $374 NZDSave up to $204 NZD

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
1.23ct Heart
$374 NZD