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Cushion|Lab Grown|IGI

2.55ct E IF Cushion Lab Grown Diamond

GD • E/IF • IGI LG729533737

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG729533737

Diamond specifications and retailer prices

From £923 GBP
$1,229 USD
As of October 29, 2026
Save £3,680 GBP (80%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £4,603 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 2.55ct lab-grown cushion diamond

This 2.55ct 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 LG729533737 or 729533737. Listed at 18 retailers as of October 29, 2026, with prices from £923 to £4,603, a £3,680 spread on the same certified stone. Brilliant Earth lists it at £4,603. 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

2.55
Carat
E
Colour
IF
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG729533737
Dimensions9.18 × 7.36 × 5.01 mm
L/W Ratio1.25
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
9.18 mm7.36 mm2.55 ctE / IF
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG729533737
Side View
Table 62.0%Crown 34.4°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 68.1%

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 29
Current: £4,603 GBP|Low: £923 GBP|High: £4,603 GBP|Avg: £2,287 GBP
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
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Retailer 17
Retailer 18
October 29, 2026
Retailer 13£923 GBP
Retailer 10£996 GBP
Retailer 16£1,111 GBP
Retailer 6£1,191 GBP
Retailer 2£1,386 GBP
Retailer 5£1,438 GBP
Retailer 11£1,534 GBP
Retailer 15£2,039 GBP
Retailer 7£2,364 GBP
Retailer 18£2,466 GBP
Retailer 12£2,467 GBP
Retailer 9£2,747 GBP
Retailer 17£2,829 GBP
Retailer 14£3,048 GBP
Retailer 3£3,248 GBP
Retailer 4£3,343 GBP
Retailer 8£3,758 GBP
Brilliant Earth£4,603 GBP

36 data points across 18 retailers

18 retailers£923 GBP to £4,603 GBP

A
Cheapest Retailer
-
£923 GBP
$1,229 USD
Final sale: no returns
A
Retailer 2
-
£996 GBP
$1,327 USD
View
Price last confirmed 16 days ago
A
Retailer 3
-
£1,111 GBP
$1,480 USD
View
A
Retailer 4
-
£1,191 GBP
$1,586 USD
View
A
Retailer 5
-
£1,386 GBP
View
A
Retailer 6
-
£1,438 GBP
$1,915 USD
View
A
Retailer 7
-
£1,534 GBP
€1,946 EUR
View
B+
Retailer 8
-
£2,039 GBP
$2,715 USD
View
B+
Retailer 9
-
£2,364 GBP
A$4,843 AUD
View
Price last confirmed 7 days ago
B+
Retailer 10
-
£2,466 GBP
$3,283 USD
View
B+
Retailer 11
-
£2,467 GBP
ZAR 53,084 ZAR
View
B+
Retailer 12
-
£2,747 GBP
View
Price last confirmed 18 days ago
B+
Retailer 13
-
£2,829 GBP
$3,767 USD
View
B+
Retailer 14
-
£3,048 GBP
$4,059 USD
View
B
Retailer 15
-
£3,248 GBP
View
B
Retailer 16
-
£3,343 GBP
$4,452 USD
View
B+
Retailer 17
-
£3,758 GBP
$5,005 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
15677911A · Oct 29
£4,603 GBP
$6,130 USD
View
17 more retailers have this diamond
Prices start from £923 GBPSave up to £3,680 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
2.55ct Cushion
£923 GBP