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1.51ct K SI2 Round Lab Grown Diamond

EX • K/SI2 • IGI LG407948755

Shape and cutting style on the report: Round brilliant

Certificate IGI LG407948755

Diamond specifications and retailer prices

From $1,551 NZD
As of November 5, 2026
Save $5,174 NZD (77%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $6,726 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 LG407948755 or 407948755. Listed at 9 retailers as of November 5, 2026, with prices from $1,551 to $6,726, a $5,174 spread on the same certified stone. MOH London lists it at $6,726. 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
SymmetryVery Good
FluorescenceNone
Crown angle33.6°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407948755
Dimensions7.36 × 7.40 × 4.47 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
7.36 mm7.40 mm1.51 ctK / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG407948755
Side View
Table 57.0%Crown 33.6°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 60.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $6,726 NZD|Low: $1,489 NZD|High: $6,825 NZD|Avg: $3,072 NZD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 4$1,551 NZD
Retailer 5$1,798 NZD
Retailer 7$1,798 NZD
Retailer 2$1,969 NZD
Retailer 6$2,892 NZD
Retailer 3$4,136 NZD
MOH London$6,726 NZD

38 data points across 7 retailers

9 retailers$1,551 NZD to $6,726 NZD

A
Cheapest Retailer
-
$1,551 NZD
B+
Retailer 2
-
$1,688 NZD
View
B+
Retailer 3
-
$1,798 NZD
View
Retailer 4
-
$1,798 NZD
View
Price last confirmed 25 days ago
A
Retailer 5
-
$1,969 NZD
View
B
Retailer 6
-
$2,892 NZD
View
B
Retailer 7
-
$4,136 NZD
View
B
Retailer 8
-
$5,059 NZD
View
Most Expensive
B
MOH London
LG407948755 · Nov 5
$6,726 NZD
£2,977 GBP
View
8 more retailers have this diamond
Prices start from $1,551 NZDSave up to $5,174 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
1.51ct Round
$1,551 NZD