CaratHunter
Plans
Round|Lab Grown|IGI

1.37ct J SI1 Round Lab Grown Diamond

EX • J/SI1 • IGI LG451057583

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451057583

Diamond specifications and retailer prices

From €577 EUR
As of November 5, 2026
Save €2,238 EUR (79%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €2,815 EUR at MOH London · As of November 5, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451057583 or 451057583. Listed at 11 retailers as of November 5, 2026, with prices from €577 to €2,815, a €2,238 spread on the same certified stone. MOH London lists it at €2,815. 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
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle31.6°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451057583
Dimensions7.31 × 7.26 × 4.25 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
undefined
Top View
7.31 mm7.26 mm1.37 ctJ / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG451057583
Side View
Table 57.5%Crown 31.6°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 58.3%

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: €2,815 EUR|Low: €555 EUR|High: €2,857 EUR|Avg: €1,234 EUR|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 5€577 EUR
Retailer 8€646 EUR
Retailer 6€670 EUR
Retailer 2€704 EUR
Retailer 4€829 EUR
Retailer 9€1,090 EUR
Retailer 7€1,094 EUR
Retailer 3€1,712 EUR
Retailer 10€1,917 EUR
MOH London€2,815 EUR

16 data points across 10 retailers

11 retailers€577 EUR to €2,815 EUR

A
Cheapest Retailer
-
€577 EUR
B+
Retailer 2
-
€629 EUR
View
B+
Retailer 3
-
€646 EUR
View
Final sale: no returns
Retailer 4
-
€670 EUR
View
Price last confirmed 21 days ago
B+
Retailer 5
-
€670 EUR
View
B+
Retailer 6
-
€704 EUR
View
B+
Retailer 7
-
€829 EUR
View
B
Retailer 8
-
€1,094 EUR
View
B
Retailer 9
-
€1,712 EUR
View
B
Retailer 10
-
€1,884 EUR
View
Most Expensive
B
MOH London
LG451057583 · Nov 5
€2,815 EUR
£2,488 GBP
View
10 more retailers have this diamond
Prices start from €577 EURSave up to €2,238 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
€577 EUR