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Round|Lab Grown|IGI

1.40ct J SI1 Round Lab Grown Diamond

EX • J/SI1 • IGI LG451057955

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451057955

Diamond specifications and retailer prices

From €593 EUR
$662 USD
As of November 1, 2026
Save €2,303 EUR (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €2,895 EUR at MOH London · As of November 1, 2026
View at MOH London

About this 1.4ct lab-grown round diamond

This 1.4ct 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 LG451057955 or 451057955. Listed at 11 retailers as of November 1, 2026, with prices from €593 to €2,895, a €2,303 spread on the same certified stone. MOH London lists it at €2,895. 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

1.40
Carat
J
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451057955
Dimensions7.30 × 7.28 × 4.24 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.30 mm7.28 mm1.40 ctJ / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451057955
Side View
Table 62.0%Crown 32.2°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 58.1%

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: Nov 1
Current: €2,895 EUR|Low: €569 EUR|High: €2,931 EUR|Avg: €1,250 EUR|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 5€593 EUR
Retailer 8€663 EUR
Retailer 6€687 EUR
Retailer 2€716 EUR
Retailer 4€846 EUR
Retailer 9€1,113 EUR
Retailer 7€1,122 EUR
Retailer 3€1,756 EUR
Retailer 10€1,968 EUR
MOH London€2,895 EUR

16 data points across 10 retailers

11 retailers€593 EUR to €2,895 EUR

A
Cheapest Retailer
-
€593 EUR
$662 USD
A
Retailer 2
-
€644 EUR
$720 USD
View
B+
Retailer 3
-
€663 EUR
$741 USD
View
Final sale: no returns
Retailer 4
-
€687 EUR
$768 USD
View
Price last confirmed 16 days ago
B+
Retailer 5
-
€687 EUR
$768 USD
View
B+
Retailer 6
-
€716 EUR
$800 USD
View
B+
Retailer 7
-
€846 EUR
$945 USD
View
B
Retailer 8
-
€1,122 EUR
$1,253 USD
View
B
Retailer 9
-
€1,756 EUR
$1,962 USD
View
B
Retailer 10
-
€1,932 EUR
$2,159 USD
View
Most Expensive
B
MOH London
LG451057955 · Nov 1
€2,895 EUR
£2,547 GBP
View
10 more retailers have this diamond
Prices start from €593 EURSave up to €2,303 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
1.40ct Round
€593 EUR