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1.37ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG681531173

Shape and cutting style on the report: Round brilliant

Certificate IGI LG681531173

Diamond specifications and retailer prices

From $297 NZD
$167 USD
As of October 29, 2026
Save $1,439 NZD (83%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,737 NZD at MOH London · As of October 29, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG681531173 or 681531173. Listed at 11 retailers as of October 29, 2026, with prices from $297 to $1,737, a $1,439 spread on the same certified stone. MOH London lists it at $1,737. 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
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG681531173
Dimensions7.16 × 7.21 × 4.36 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
7.16 mm7.21 mm1.37 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG681531173
Side View
Table 59.0%Crown 34.2°Girdle: MediumPavilion 40.9°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: Oct 29
Current: $1,737 NZD|Low: $297 NZD|High: $2,368 NZD|Avg: $984 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
Retailer 13
Retailer 14
October 30, 2026
Retailer 8$297 NZD
Retailer 4$369 NZD
Retailer 12$433 NZD
Retailer 9$636 NZD
Retailer 7$655 NZD
Retailer 13$664 NZD
Retailer 2$722 NZD
Retailer 11$814 NZD
Retailer 10$824 NZD
Retailer 14$908 NZD
Retailer 3$1,188 NZD
Retailer 5$1,677 NZD
MOH London$1,737 NZD
Retailer 6$2,368 NZD

4 data points across 14 retailers

11 retailers$297 NZD to $1,737 NZD

A
Cheapest Retailer
-
$297 NZD
$167 USD
A
Retailer 2
-
$369 NZD
$207 USD
View
A
Retailer 3
-
$433 NZD
HK$1,900 HKD
View
A
Retailer 4
-
$636 NZD
€340 EUR
View
A
Retailer 5
-
$655 NZD
£289 GBP
View
B+
Retailer 6
-
$664 NZD
$373 USD
View
A
Retailer 7
-
$722 NZD
£319 GBP
View
B+
Retailer 8
-
$814 NZD
$457 USD
View
B+
Retailer 9
-
$824 NZD
$463 USD
View
B+
Retailer 10
-
$1,188 NZD
$667 USD
View
Most Expensive
B
MOH London
LG681531173 · Oct 29
$1,737 NZD
£768 GBP
View
10 more retailers have this diamond
Prices start from $297 NZDSave up to $1,439 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
$297 NZD