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Cushion|Lab Grown|IGI

2.50ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG613392731

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG613392731

Diamond specifications and retailer prices

From €380 EUR
$424 USD
As of October 31, 2026
Save €1,778 EUR (82%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €2,157 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 2.5ct lab-grown cushion diamond

This 2.5ct lab-grown cushion sits in the two to three carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG613392731 or 613392731. Listed at 11 retailers as of October 31, 2026, with prices from €380 to €2,157, a €1,778 spread on the same certified stone. Brilliant Earth lists it at €2,157. 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

2.50
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG613392731
Dimensions8.71 × 7.38 × 5.20 mm
L/W Ratio1.18
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
8.71 mm7.38 mm2.50 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG613392731
Side View
Table 63.0%Crown 33.7°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 70.5%

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: Oct 31
Current: €2,157 EUR|Low: €380 EUR|High: €2,220 EUR|Avg: €925 EUR|-2.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 9€380 EUR
Retailer 6€421 EUR
Retailer 4€555 EUR
Retailer 7€670 EUR
Retailer 2€673 EUR
Retailer 8€742 EUR
Retailer 3€755 EUR
Retailer 5€1,652 EUR
Brilliant Earth€2,157 EUR

41 data points across 9 retailers

11 retailers€380 EUR to €2,157 EUR

A
Cheapest Retailer
-
€380 EUR
$424 USD
Final sale: no returns
A
Retailer 2
-
€421 EUR
$470 USD
View
A
Retailer 3
-
€555 EUR
$620 USD
View
B+
Retailer 4
-
€670 EUR
$748 USD
View
A
Retailer 5
-
€673 EUR
View
B+
Retailer 6
-
€727 EUR
$812 USD
View
B+
Retailer 7
-
€742 EUR
$829 USD
View
B+
Retailer 8
-
€755 EUR
£664 GBP
View
B
Retailer 9
-
€1,386 EUR
$1,549 USD
View
B
Retailer 10
-
€1,652 EUR
£1,453 GBP
View
Most Expensive
B
Brilliant Earth
8815295A · Oct 31
€2,157 EUR
$2,410 USD
View
10 more retailers have this diamond
Prices start from €380 EURSave up to €1,778 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
2.50ct Cushion
€380 EUR