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Cushion|Lab Grown|IGI

2.59ct E IF Cushion Lab Grown Diamond

GD • E/IF • IGI LG728517095

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG728517095

Diamond specifications and retailer prices

From £906 GBP
$1,204 USD
As of October 28, 2026
Save £3,782 GBP (81%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £4,689 GBP at Brilliant Earth · As of October 28, 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 IF clarity (flawless or internally-flawless), with a standard cut grade and certified by IGI LG728517095 or 728517095. Listed at 18 retailers as of October 28, 2026, with prices from £906 to £4,689, a £3,782 spread on the same certified stone. Brilliant Earth lists it at £4,689. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

2.59
Carat
E
Colour
IF
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG728517095
Dimensions9.43 × 7.28 × 4.99 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
9.43 mm7.28 mm2.59 ctE / IF
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG728517095
Side View
Table 63.0%Crown 34°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 68.5%

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 28
Current: £4,689 GBP|Low: £906 GBP|High: £4,832 GBP|Avg: £2,406 GBP|-3.0%
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
October 29, 2026
Retailer 11£906 GBP
Retailer 9£1,014 GBP
Retailer 15£1,133 GBP
Retailer 5£1,176 GBP
Retailer 13£1,352 GBP
Retailer 4£1,413 GBP
Retailer 16£1,494 GBP
Retailer 14£2,093 GBP
Retailer 6£2,405 GBP
Retailer 17£2,419 GBP
Retailer 8£2,592 GBP
Retailer 2£2,776 GBP
Retailer 10£2,799 GBP
Retailer 12£3,001 GBP
Retailer 18£3,188 GBP
Retailer 3£3,281 GBP
Retailer 7£3,827 GBP
Brilliant Earth£4,689 GBP

38 data points across 18 retailers

18 retailers£906 GBP to £4,689 GBP

A
Cheapest Retailer
-
£906 GBP
$1,204 USD
Final sale: no returns
A
Retailer 2
-
£1,014 GBP
$1,348 USD
View
Price last confirmed 16 days ago
A
Retailer 3
-
£1,133 GBP
$1,505 USD
View
A
Retailer 4
-
£1,176 GBP
$1,563 USD
View
A
Retailer 5
-
£1,352 GBP
View
A
Retailer 6
-
£1,413 GBP
$1,878 USD
View
A
Retailer 7
-
£1,494 GBP
€1,891 EUR
View
B+
Retailer 8
-
£2,093 GBP
$2,781 USD
View
B+
Retailer 9
-
£2,405 GBP
A$4,917 AUD
View
Price last confirmed 7 days ago
B+
Retailer 10
-
£2,419 GBP
$3,215 USD
View
B+
Retailer 11
-
£2,592 GBP
ZAR 55,639 ZAR
View
Price last confirmed 14 days ago
B+
Retailer 12
-
£2,776 GBP
$3,688 USD
View
B+
Retailer 13
-
£2,799 GBP
View
Price last confirmed 17 days ago
B+
Retailer 14
-
£3,001 GBP
$3,988 USD
View
B+
Retailer 15
-
£3,188 GBP
View
B+
Retailer 16
-
£3,281 GBP
$4,359 USD
View
B+
Retailer 17
-
£3,827 GBP
$5,085 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
15521568A · Oct 28
£4,689 GBP
$6,230 USD
View
17 more retailers have this diamond
Prices start from £906 GBPSave up to £3,782 GBP

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
£906 GBP