CaratHunter
Plans
Cushion|Lab Grown|IGI

2.54ct E IF Cushion Lab Grown Diamond

EX • E/IF • IGI LG815677110

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG815677110

Diamond specifications and retailer prices

From £914 GBP
$1,225 USD
As of October 31, 2026
Save £3,108 GBP (77%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £4,023 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 2.54ct lab-grown cushion diamond

This 2.54ct lab-grown cushion sits in the two to three carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG815677110 or 815677110. Listed at 16 retailers as of October 30, 2026, with prices from £914 to £4,023, a £3,108 spread on the same certified stone. Brilliant Earth lists it at £4,023. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

2.54
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.4°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG815677110
Dimensions8.19 × 7.99 × 5.22 mm
L/W Ratio1.03
Girdle conditionFaceted
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
8.19 mm7.99 mm2.54 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG815677110
Side View
Table 61.0%Crown 37.4°Girdle: MED-STKPavilion 39.1°Culet: NoneDepth 65.3%

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: £4,023 GBP|Low: £914 GBP|High: £4,702 GBP|Avg: £2,419 GBP|-14.4%
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
October 31, 2026
Retailer 16£914 GBP
Retailer 7£1,020 GBP
Retailer 9£1,056 GBP
Retailer 2£1,361 GBP
Retailer 4£1,507 GBP
Retailer 10£1,518 GBP
Retailer 14£2,011 GBP
Retailer 5£2,426 GBP
Retailer 11£2,443 GBP
Retailer 8£2,468 GBP
Retailer 15£2,742 GBP
Retailer 13£3,019 GBP
Retailer 12£3,228 GBP
Retailer 3£3,310 GBP
Retailer 6£3,724 GBP
Brilliant Earth£4,023 GBP

39 data points across 16 retailers

16 retailers£914 GBP to £4,023 GBP

A
Cheapest Retailer
-
£914 GBP
$1,225 USD
Final sale: no returns
Retailer 2
-
£1,020 GBP
$1,367 USD
View
Price last confirmed 18 days ago
A
Retailer 3
-
£1,056 GBP
$1,415 USD
View
A
Retailer 4
-
£1,361 GBP
View
A
Retailer 5
-
£1,507 GBP
$2,019 USD
View
A
Retailer 6
-
£1,518 GBP
€1,937 EUR
View
A
Retailer 7
-
£2,011 GBP
$2,695 USD
View
Retailer 8
-
£2,426 GBP
A$5,000 AUD
View
Price last confirmed 8 days ago
A
Retailer 9
-
£2,443 GBP
ZAR 52,882 ZAR
View
Retailer 10
-
£2,468 GBP
View
Price last confirmed 19 days ago
B+
Retailer 11
-
£2,742 GBP
$3,674 USD
View
B+
Retailer 12
-
£3,019 GBP
$4,046 USD
View
B+
Retailer 13
-
£3,228 GBP
View
B+
Retailer 14
-
£3,310 GBP
$4,435 USD
View
Retailer 15
-
£3,724 GBP
$4,990 USD
View
Price last confirmed 12 days ago
Most Expensive
B+
Brilliant Earth
21017069A · Oct 30
£4,023 GBP
$5,390 USD
View
15 more retailers have this diamond
Prices start from £914 GBPSave up to £3,108 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
2.54ct Cushion
£914 GBP