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Cushion|Lab Grown|IGI

2.55ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG724553220

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG724553220

Diamond specifications and retailer prices

From £1,253 GBP
$1,669 USD
As of October 28, 2026
Save £2,717 GBP (68%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £4,618 GBP at Brilliant Earth · As of October 21, 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 top-tier cut grade and certified by IGI LG724553220 or 724553220. Listed at 19 retailers as of October 27, 2026, with a 217% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

2.55
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.9°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG724553220
Dimensions8.55 × 7.29 × 4.95 mm
L/W Ratio1.17
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.55 mm7.29 mm2.55 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG724553220
Side View
Table 61.0%Crown 38.9°Girdle: STK-THKPavilion 35.9°Culet: NoneDepth 67.9%

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 28
Current: £4,618 GBP|Low: £1,156 GBP|High: £4,618 GBP|Avg: £2,556 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
Retailer 15
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Retailer 17
Retailer 18
October 29, 2026
Retailer 10£1,198 GBP
Retailer 7£1,253 GBP
Retailer 15£1,262 GBP
Retailer 18£1,344 GBP
Retailer 2£1,594 GBP
Retailer 16£1,761 GBP
Retailer 12£1,816 GBP
Retailer 3£1,977 GBP
Retailer 17£2,088 GBP
Retailer 5£2,735 GBP
Retailer 6£2,848 GBP
Retailer 11£2,917 GBP
Retailer 9£3,103 GBP
Retailer 14£3,245 GBP
Retailer 13£3,653 GBP
Retailer 8£3,721 GBP
Retailer 4£3,970 GBP
Brilliant Earth£4,618 GBP

32 data points across 18 retailers

19 retailers£1,253 GBP to £3,970 GBP

A
Retailer 1
-
£1,198 GBP
$1,595 USD
Price last confirmed 16 days ago
A
Retailer 2
-
£1,253 GBP
$1,669 USD
View
Final sale: no returns
A
Retailer 3
-
£1,262 GBP
$1,680 USD
View
A
Retailer 4
-
£1,344 GBP
$1,790 USD
View
A
Retailer 5
-
£1,594 GBP
View
A
Retailer 6
-
£1,761 GBP
$2,345 USD
View
A
Retailer 7
-
£1,816 GBP
€2,303 EUR
View
A
Retailer 8
-
£1,977 GBP
$2,633 USD
View
A
Retailer 9
-
£2,088 GBP
$2,781 USD
View
B+
Retailer 10
-
£2,735 GBP
View
B+
Retailer 11
-
£2,848 GBP
A$5,835 AUD
View
Price last confirmed 7 days ago
B+
Retailer 12
-
£2,917 GBP
ZAR 62,762 ZAR
View
B+
Retailer 13
-
£3,103 GBP
A$6,358 AUD
View
Price last confirmed 20 days ago
B+
Retailer 14
-
£3,109 GBP
$4,140 USD
View
B+
Retailer 15
-
£3,245 GBP
$4,321 USD
View
B+
Retailer 16
-
£3,653 GBP
View
B+
Retailer 17
-
£3,721 GBP
$4,955 USD
View
Price last confirmed 10 days ago
B+
Retailer 18
-
£3,970 GBP
$5,287 USD
View
Most Expensive
B
Brilliant Earth
15598762A · Oct 21
£4,618 GBP
$6,150 USD
View
Price last confirmed 7 days ago
18 more retailers have this diamond
Prices start from £1,253 GBPSave up to £2,717 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
£1,253 GBP