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Round|Lab Grown|IGI

1.50ct K SI2 Round Lab Grown Diamond

EX • K/SI2 • IGI LG451057002

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451057002

Diamond specifications and retailer prices

From $3,191 NZD
As of November 5, 2026
Save $3,748 NZD (54%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $10,546 NZD at MOH London · As of November 5, 2026
View at MOH London

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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451057002 or 451057002. Listed at 8 retailers as of November 5, 2026, with a 117% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.1°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451057002
Dimensions7.48 × 7.46 × 4.40 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
Faint Brown
Top View
7.48 mm7.46 mm1.50 ctK / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451057002
Side View
Table 60.0%Crown 32.1°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 58.9%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: $10,546 NZD|Low: $3,063 NZD|High: $10,715 NZD|Avg: $5,758 NZD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 3$3,191 NZD
Retailer 4$3,702 NZD
Retailer 6$3,702 NZD
Retailer 8$3,739 NZD
Retailer 7$4,910 NZD
Retailer 5$5,806 NZD
Retailer 2$6,228 NZD
Retailer 9$8,284 NZD
MOH London$10,546 NZD

16 data points across 9 retailers

8 retailers$3,191 NZD to $6,939 NZD

B+
Cheapest Retailer
-
$3,191 NZD
B
Retailer 2
-
$3,472 NZD
View
Retailer 3
-
$3,702 NZD
View
Price last confirmed 25 days ago
B
Retailer 4
-
$3,702 NZD
View
B
Retailer 5
-
$5,806 NZD
View
C
Retailer 6
-
$6,228 NZD
View
C
Retailer 7
-
$6,939 NZD
View
Most Expensive
MOH London
LG451057002 · Nov 5
$10,546 NZD
£4,668 GBP
View
Price under review
7 more retailers have this diamond
Prices start from $3,191 NZDSave up to $3,748 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
$3,191 NZD