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1.37ct I SI2 Round Lab Grown Diamond

EX • I/SI2 • IGI LG478112006

Shape and cutting style on the report: Round brilliant

Certificate IGI LG478112006

Diamond specifications and retailer prices

From $1,227 NZD
As of November 5, 2026
Save $4,362 NZD (78%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $5,589 NZD at MOH London · As of November 3, 2026
View at MOH London

About this 1.37ct lab-grown round diamond

This 1.37ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG478112006 or 478112006. Listed at 10 retailers as of November 3, 2026, with prices from $1,227 to $5,589, a $4,362 spread on the same certified stone. MOH London lists it at $5,589. 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

1.37
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.1°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG478112006
Dimensions7.24 × 7.21 × 4.37 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.24 mm7.21 mm1.37 ctI / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG478112006
Side View
Table 57.5%Crown 32.1°Girdle: THN-STKPavilion 41.3°Culet: NoneDepth 60.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $5,589 NZD|Low: $1,178 NZD|High: $5,657 NZD|Avg: $2,442 NZD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 6$1,227 NZD
Retailer 9$1,336 NZD
Retailer 2$1,370 NZD
Retailer 11$1,373 NZD
Retailer 7$1,423 NZD
Retailer 3$1,452 NZD
Retailer 12$2,282 NZD
Retailer 8$2,316 NZD
Retailer 4$3,186 NZD
Retailer 5$3,506 NZD
Retailer 10$4,003 NZD
MOH London$5,589 NZD

15 data points across 12 retailers

10 retailers$1,227 NZD to $5,589 NZD

A
Cheapest Retailer
-
$1,227 NZD
A
Retailer 2
-
$1,336 NZD
View
A
Retailer 3
-
$1,370 NZD
View
A
Retailer 4
-
$1,373 NZD
View
Final sale: no returns
Retailer 5
-
$1,423 NZD
View
Price last confirmed 21 days ago
A
Retailer 6
-
$1,423 NZD
View
B+
Retailer 7
-
$2,316 NZD
View
B
Retailer 8
-
$3,506 NZD
View
B
Retailer 9
-
$4,003 NZD
View
Most Expensive
B
MOH London
LG478112006 · Nov 3
$5,589 NZD
£2,474 GBP
View
9 more retailers have this diamond
Prices start from $1,227 NZDSave up to $4,362 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
1.37ct Round
$1,227 NZD