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Round|Lab Grown|IGI

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 €149 EUR
$167 USD
As of October 29, 2026
Save €724 EUR (83%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €873 EUR 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 13 retailers as of October 29, 2026, with prices from €149 to €873, a €724 spread on the same certified stone. MOH London lists it at €873. 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: €873 EUR|Low: €149 EUR|High: €1,190 EUR|Avg: €491 EUR
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
Retailer 15
Retailer 16
October 30, 2026
Retailer 12€149 EUR
Retailer 9€174 EUR
Retailer 6€185 EUR
Retailer 16€218 EUR
Retailer 13€320 EUR
Retailer 11€329 EUR
Retailer 3€334 EUR
Retailer 10€363 EUR
Retailer 15€409 EUR
Retailer 14€414 EUR
Retailer 4€456 EUR
Retailer 5€597 EUR
Retailer 2€630 EUR
Retailer 7€843 EUR
MOH London€873 EUR
Retailer 8€1,190 EUR

4 data points across 16 retailers

13 retailers€149 EUR to €873 EUR

A
Cheapest Retailer
-
€149 EUR
$167 USD
A
Retailer 2
-
€174 EUR
$194 USD
View
A
Retailer 3
-
€185 EUR
$207 USD
View
A
Retailer 4
-
€218 EUR
HK$1,900 HKD
View
A
Retailer 5
-
€320 EUR
View
A
Retailer 6
-
€329 EUR
£289 GBP
View
B+
Retailer 7
-
€334 EUR
$373 USD
View
A
Retailer 8
-
€363 EUR
£319 GBP
View
B+
Retailer 9
-
€409 EUR
$457 USD
View
B+
Retailer 10
-
€414 EUR
$463 USD
View
B+
Retailer 11
-
€597 EUR
$667 USD
View
B+
Retailer 12
-
€630 EUR
$704 USD
View
Most Expensive
B
MOH London
LG681531173 · Oct 29
€873 EUR
£768 GBP
View
12 more retailers have this diamond
Prices start from €149 EURSave up to €724 EUR

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
€149 EUR