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Round|Lab Grown|IGI

2.57ct K SI1 Round Lab Grown Diamond

ID • K/SI1 • IGI LG499106400

Shape and cutting style on the report: Round brilliant

Certificate IGI LG499106400

Diamond specifications and retailer prices

From €1,995 EUR
As of November 5, 2026
Save €4,283 EUR (68%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €6,278 EUR at MOH London · As of November 3, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG499106400 or 499106400. Listed at 10 retailers as of November 3, 2026, with prices from €1,995 to €6,278, a €4,283 spread on the same certified stone. MOH London lists it at €6,278. 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
K
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG499106400
Dimensions8.78 × 8.81 × 5.40 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
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
8.78 mm8.81 mm2.57 ctK / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG499106400
Side View
Table 56.0%Crown 35.8°GirdlePavilion 40.1°Culet: NoneDepth 61.4%

Caratlytics Score

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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 5
Current: €6,278 EUR|Low: €1,915 EUR|High: €6,362 EUR|Avg: €3,206 EUR
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 5€1,995 EUR
Retailer 2€2,243 EUR
Retailer 6€2,314 EUR
Retailer 8€2,314 EUR
Retailer 3€2,459 EUR
Retailer 9€2,952 EUR
Retailer 7€3,613 EUR
Retailer 4€3,627 EUR
MOH London€6,278 EUR

40 data points across 9 retailers

10 retailers€1,995 EUR to €6,278 EUR

A
Cheapest Retailer
-
€1,995 EUR
A
Retailer 2
-
€2,170 EUR
View
A
Retailer 3
-
€2,243 EUR
View
A
Retailer 4
-
€2,314 EUR
View
Retailer 5
-
€2,314 EUR
View
Price last confirmed 26 days ago
B+
Retailer 6
-
€2,459 EUR
View
B
Retailer 7
-
€3,181 EUR
View
B
Retailer 8
-
€3,613 EUR
View
B
Retailer 9
-
€3,627 EUR
View
Most Expensive
B
MOH London
LG499106400 · Nov 3
€6,278 EUR
£5,548 GBP
View
9 more retailers have this diamond
Prices start from €1,995 EURSave up to €4,283 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
€1,995 EUR