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1.50ct D SI2 Round Lab Grown Diamond

ID • D/SI2 • IGI LG774639549

Shape and cutting style on the report: Round brilliant

Certificate IGI LG774639549

Diamond specifications and retailer prices

From $990 NZD
A$858 AUD
As of October 31, 2026
Save $483 NZD (33%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $1,473 NZD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.5ct lab-grown round diamond

This 1.5ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG774639549 or 774639549. Listed at 2 retailers as of October 29, 2026, with prices from $990 to $1,473, a $483 spread on the same certified stone. Brilliant Earth lists it at $1,473. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.50
Carat
D
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG774639549
Dimensions7.41 × 7.35 × 4.50 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.41 mm7.35 mm1.50 ctD / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG774639549
Side View
Table 58.0%Crown 33.8°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 60.9%

Caratlytics Score

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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: Oct 31
Current: $1,473 NZD|Low: $515 NZD|High: $2,413 NZD|Avg: $1,192 NZD|-39.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
September 9, 2026
Retailer 6$562 NZD
Retailer 8$725 NZD
Retailer 5$772 NZD
Retailer 9$786 NZD
Retailer 2$990 NZD
Retailer 11$1,019 NZD
Retailer 4$1,065 NZD
Retailer 3$1,084 NZD
Retailer 7$1,467 NZD
Brilliant Earth$1,473 NZD
Retailer 10$1,857 NZD

55 data points across 11 retailers

2 retailers$990 NZD to $1,473 NZD

B+
Cheapest Retailer
-
$990 NZD
A$858 AUD
Most Expensive
B
Brilliant Earth
18474969Y · Oct 29
$1,473 NZD
$830 USD
View
1 more retailer has this diamond
Prices start from $990 NZDSave up to $483 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+
1.50ct Round
$990 NZD