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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 $325 USD
As of October 30, 2026
Save $2,125 USD (87%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,450 USD 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 $325 to $2,450, a $2,125 spread on the same certified stone. Brilliant Earth lists it at $2,450. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $2,450 USD|Low: $325 USD|High: $2,890 USD|Avg: $993 USD|-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$325 USD
Retailer 8$452 USD
Retailer 14$485 USD
Retailer 5$490 USD
Retailer 7$515 USD
Retailer 9$583 USD
Retailer 2$631 USD
Retailer 12$663 USD
Retailer 3$830 USD
Retailer 4$1,205 USD
Retailer 10$1,449 USD
Retailer 13$1,481 USD
Retailer 6$1,770 USD
Brilliant Earth$2,450 USD

40 data points across 14 retailers

13 retailers$325 USD to $2,450 USD

A
Cheapest Retailer
-
$325 USD
Final sale: no returns
A
Retailer 2
-
$452 USD
£356 GBP
View
B+
Retailer 3
-
$485 USD
View
A
Retailer 4
-
$515 USD
View
A
Retailer 5
-
$583 USD
€555 EUR
View
A
Retailer 6
-
$631 USD
£497 GBP
View
A
Retailer 7
-
$663 USD
View
B+
Retailer 8
-
$830 USD
View
B+
Retailer 9
-
$1,205 USD
View
B+
Retailer 10
-
$1,449 USD
£1,141 GBP
View
B
Retailer 11
-
$1,481 USD
View
Retailer 12
-
$1,770 USD
View
Price last confirmed 30 days ago
Most Expensive
B
Brilliant Earth
18587734A · Oct 29
$2,450 USD
View
12 more retailers have this diamond
Prices start from $325 USDSave up to $2,125 USD

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
$325 USD