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2.57ct J SI2 Round Lab Grown Diamond

EX • J/SI2 • IGI LG478111991

Shape and cutting style on the report: Round brilliant

Certificate IGI LG478111991

Diamond specifications and retailer prices

From €1,244 EUR
$1,390 USD
As of October 30, 2026
Save €6,347 EUR (84%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €7,591 EUR at MOH London · As of October 29, 2026
View at MOH London

About this 2.57ct lab-grown round diamond

This 2.57ct lab-grown round sits in the two to three carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG478111991 or 478111991. Listed at 10 retailers as of October 29, 2026, with prices from €1,244 to €7,591, a €6,347 spread on the same certified stone. MOH London lists it at €7,591. 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

2.57
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG478111991
Dimensions8.62 × 8.68 × 5.45 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.62 mm8.68 mm2.57 ctJ / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG478111991
Side View
Table 56.0%Crown 36.4°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 62.9%

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 30
Current: €7,591 EUR|Low: €1,244 EUR|High: €7,652 EUR|Avg: €3,777 EUR|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 2€1,244 EUR
Retailer 5€2,431 EUR
Retailer 8€2,645 EUR
Retailer 10€2,722 EUR
Retailer 6€2,820 EUR
Retailer 11€3,430 EUR
Retailer 9€3,877 EUR
Retailer 4€4,138 EUR
Retailer 7€4,390 EUR
Retailer 3€6,311 EUR
MOH London€7,591 EUR

19 data points across 11 retailers

10 retailers€1,244 EUR to €7,591 EUR

A
Cheapest Retailer
-
€1,244 EUR
$1,390 USD
B+
Retailer 2
-
€2,431 EUR
$2,716 USD
View
B+
Retailer 3
-
€2,645 EUR
$2,955 USD
View
B+
Retailer 4
-
€2,722 EUR
$3,041 USD
View
Final sale: no returns
B+
Retailer 5
-
€2,820 EUR
$3,151 USD
View
Retailer 6
-
€2,820 EUR
$3,151 USD
View
Price last confirmed 18 days ago
B
Retailer 7
-
€3,877 EUR
$4,331 USD
View
B
Retailer 8
-
€4,138 EUR
$4,623 USD
View
B
Retailer 9
-
€4,390 EUR
$4,904 USD
View
Most Expensive
B
MOH London
LG478111991 · Oct 29
€7,591 EUR
£6,678 GBP
View
9 more retailers have this diamond
Prices start from €1,244 EURSave up to €6,347 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
2.57ct Round
€1,244 EUR