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Heart|Lab Grown|IGI

1.51ct D SI1 Heart Lab Grown Diamond

D/SI1

Diamond specifications and retailer prices

From $503 NZD
As of November 6, 2026
Save $298 NZD (37%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $801 NZD at MoiMoi Australia · As of November 1, 2026
View at MoiMoi Australia

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 SI1 clarity (slightly-included) and certified by IGI. Listed at 2 retailers as of November 1, 2026, with prices from $503 to $801, a $298 spread on the same certified stone. MoiMoi Australia lists it at $801. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
D
Colour
SI1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions7.24 × 7.66 × 4.65 mm
L/W Ratio1.06
Top View
7.24 mm7.66 mm1.51 ctD / SI1
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 58.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 60.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $801 NZD|Low: $254 NZD|High: $842 NZD|Avg: $453 NZD|-4.9%
MoiMoi Australia
Retailer 2
Retailer 3
November 6, 2026
Retailer 3$254 NZD
Retailer 2$503 NZD
MoiMoi Australia$801 NZD

39 data points across 3 retailers

2 retailers$503 NZD to $801 NZD

B+
Cheapest Retailer
-
$503 NZD
Most Expensive
B+
MoiMoi Australia
423075007 · Nov 1
$801 NZD
A$683 AUD
View
1 more retailer has this diamond
Prices start from $503 NZDSave up to $298 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.

B+
1.51ct Heart
$503 NZD