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Cushion|Lab Grown|IGI

2.59ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG737580697

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG737580697

Diamond specifications and retailer prices

From €291 EUR
$325 USD
As of October 31, 2026
Save €1,902 EUR (87%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €2,193 EUR at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 2.59ct lab-grown cushion diamond

This 2.59ct 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 LG737580697 or 737580697. Listed at 13 retailers as of October 29, 2026, with prices from €291 to €2,193, a €1,902 spread on the same certified stone. Brilliant Earth lists it at €2,193. 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

2.59
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle35.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG737580697
Dimensions8.98 × 7.33 × 4.84 mm
L/W Ratio1.23
Girdle conditionFaceted
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.98 mm7.33 mm2.59 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG737580697
Side View
Table 57.0%Crown 33.8°Girdle: STK-VTKPavilion 35.2°Culet: NoneDepth 66.0%

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: Oct 31
Current: €2,193 EUR|Low: €291 EUR|High: €2,587 EUR|Avg: €889 EUR|-15.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 31, 2026
Retailer 11€291 EUR
Retailer 8€404 EUR
Retailer 14€434 EUR
Retailer 5€439 EUR
Retailer 7€461 EUR
Retailer 9€522 EUR
Retailer 2€565 EUR
Retailer 12€593 EUR
Retailer 3€743 EUR
Retailer 4€1,078 EUR
Retailer 10€1,297 EUR
Retailer 13€1,325 EUR
Retailer 6€1,584 EUR
Brilliant Earth€2,193 EUR

40 data points across 14 retailers

13 retailers€291 EUR to €2,193 EUR

A
Cheapest Retailer
-
€291 EUR
$325 USD
Final sale: no returns
A
Retailer 2
-
€404 EUR
£356 GBP
View
B+
Retailer 3
-
€434 EUR
$485 USD
View
A
Retailer 4
-
€461 EUR
$515 USD
View
A
Retailer 5
-
€522 EUR
View
A
Retailer 6
-
€565 EUR
£497 GBP
View
A
Retailer 7
-
€593 EUR
$663 USD
View
B+
Retailer 8
-
€743 EUR
$830 USD
View
B+
Retailer 9
-
€1,078 EUR
$1,205 USD
View
B+
Retailer 10
-
€1,297 EUR
£1,141 GBP
View
B
Retailer 11
-
€1,325 EUR
$1,481 USD
View
Retailer 12
-
€1,584 EUR
$1,770 USD
View
Price last confirmed 31 days ago
Most Expensive
B
Brilliant Earth
18587734A · Oct 29
€2,193 EUR
$2,450 USD
View
12 more retailers have this diamond
Prices start from €291 EURSave up to €1,902 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
2.59ct Cushion
€291 EUR