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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 $167 USD
As of October 29, 2026
Save $808 USD (83%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $975 USD 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 $167 to $975, a $808 spread on the same certified stone. MOH London lists it at $975. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $975 USD|Low: $167 USD|High: $1,330 USD|Avg: $560 USD
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 29, 2026
Retailer 7$167 USD
Retailer 4$207 USD
Retailer 12$243 USD
Retailer 8$357 USD
Retailer 2$367 USD
Retailer 13$373 USD
Retailer 9$406 USD
Retailer 11$457 USD
Retailer 10$463 USD
Retailer 14$510 USD
Retailer 3$667 USD
Retailer 5$942 USD
MOH London$975 USD
Retailer 6$1,330 USD

3 data points across 14 retailers

11 retailers$167 USD to $975 USD

A
Cheapest Retailer
-
$167 USD
A
Retailer 2
-
$207 USD
View
A
Retailer 3
-
$243 USD
HK$1,900 HKD
View
A
Retailer 4
-
$357 USD
€340 EUR
View
A
Retailer 5
-
$367 USD
£289 GBP
View
B+
Retailer 6
-
$373 USD
View
A
Retailer 7
-
$406 USD
£320 GBP
View
B+
Retailer 8
-
$457 USD
View
B+
Retailer 9
-
$463 USD
View
B+
Retailer 10
-
$667 USD
View
Most Expensive
B
MOH London
LG681531173 · Oct 29
$975 USD
£768 GBP
View
10 more retailers have this diamond
Prices start from $167 USDSave up to $808 USD

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
$167 USD