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Round|Lab Grown|IGI

1.51ct K SI2 Round Lab Grown Diamond

EX • K/SI2 • IGI LG462132991

Shape and cutting style on the report: Round brilliant

Certificate IGI LG462132991

Diamond specifications and retailer prices

From $3,213 NZD
As of November 5, 2026
Save $3,773 NZD (54%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $10,614 NZD at MOH London · As of November 5, 2026
View at MOH London

About this 1.51ct lab-grown round diamond

This 1.51ct 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 LG462132991 or 462132991. 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

1.51
Carat
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG462132991
Dimensions7.34 × 7.37 × 4.46 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
Faint Brown This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.34 mm7.37 mm1.51 ctK / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG462132991
Side View
Table 60.0%Crown 36.1°GirdlePavilion 40.1°Culet: NoneDepth 60.6%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $10,614 NZD|Low: $3,085 NZD|High: $10,785 NZD|Avg: $5,954 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$3,213 NZD
Retailer 6$3,496 NZD
Retailer 4$3,727 NZD
Retailer 8$4,938 NZD
Retailer 5$5,845 NZD
Retailer 2$6,269 NZD
Retailer 7$6,986 NZD
Retailer 9$8,339 NZD
MOH London$10,614 NZD

15 data points across 9 retailers

8 retailers$3,213 NZD to $6,986 NZD

B
Cheapest Retailer
-
$3,213 NZD
B
Retailer 2
-
$3,496 NZD
View
Retailer 3
-
$3,727 NZD
View
Price last confirmed 25 days ago
B
Retailer 4
-
$3,727 NZD
View
C
Retailer 5
-
$5,845 NZD
View
C
Retailer 6
-
$6,269 NZD
View
C
Retailer 7
-
$6,986 NZD
View
Most Expensive
MOH London
LG462132991 · Nov 5
$10,614 NZD
£4,698 GBP
View
Price under review
7 more retailers have this diamond
Prices start from $3,213 NZDSave up to $3,773 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 Round
$3,213 NZD