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Cushion|Lab Grown|IGI

2.55ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG810616168

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG810616168

Diamond specifications and retailer prices

From £439 GBP
$588 USD
As of October 30, 2026
Save £1,927 GBP (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £2,366 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG810616168 or 810616168. Listed at 12 retailers as of October 29, 2026, with prices from £439 to £2,366, a £1,927 spread on the same certified stone. Do Amore Diamonds lists it at £2,366. 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

2.55
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG810616168
Dimensions9.64 × 7.33 × 4.81 mm
L/W Ratio1.32
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.64 mm7.33 mm2.55 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG810616168
Side View
Table 59.0%Crown 36.3°Girdle: STK-THKPavilion 40.5°Culet: NoneDepth 65.6%

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 30
Current: £2,366 GBP|Low: £384 GBP|High: £2,366 GBP|Avg: £1,066 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 29, 2026
Retailer 10£439 GBP
Retailer 6£440 GBP
Retailer 4£489 GBP
Retailer 2£563 GBP
Retailer 5£727 GBP
Retailer 9£874 GBP
Retailer 11£1,002 GBP
Retailer 13£1,082 GBP
Retailer 8£1,269 GBP
Retailer 12£1,311 GBP
Retailer 7£1,426 GBP
Retailer 3£1,858 GBP
Do Amore Diamonds£2,366 GBP

22 data points across 13 retailers

12 retailers£439 GBP to £2,366 GBP

B+
Cheapest Retailer
-
£439 GBP
$588 USD
A
Retailer 2
-
£440 GBP
$590 USD
View
A
Retailer 3
-
£489 GBP
$655 USD
View
A
Retailer 4
-
£563 GBP
€718 EUR
View
B+
Retailer 5
-
£874 GBP
$1,171 USD
View
B
Retailer 6
-
£1,002 GBP
$1,342 USD
View
B
Retailer 7
-
£1,082 GBP
$1,450 USD
View
B
Retailer 8
-
£1,269 GBP
$1,700 USD
View
B
Retailer 9
-
£1,311 GBP
SGD 2,373 SGD
View
B
Retailer 10
-
£1,426 GBP
View
B
Retailer 11
-
£1,769 GBP
$2,370 USD
View
Most Expensive
B
Do Amore Diamonds
27-174D02307 · Oct 29
£2,366 GBP
$3,170 USD
View
11 more retailers have this diamond
Prices start from £439 GBPSave up to £1,927 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
£439 GBP