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Cushion|Lab Grown|IGI

2.57ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG810620113

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG810620113

Diamond specifications and retailer prices

From £650 GBP
$866 USD
As of October 29, 2026
Save £2,331 GBP (78%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £2,981 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 2.57ct lab-grown cushion diamond

This 2.57ct 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 LG810620113 or 810620113. Listed at 5 retailers as of October 29, 2026, with prices from £650 to £2,981, a £2,331 spread on the same certified stone. Do Amore Diamonds lists it at £2,981. 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

2.57
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG810620113
Dimensions10.24 × 6.83 × 4.55 mm
L/W Ratio1.50
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.24 mm6.83 mm2.57 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG810620113
Side View
Table 50.0%Crown 36.4°Girdle: MED-THKPavilion 38.7°CuletDepth 66.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £2,981 GBP|Low: £548 GBP|High: £2,981 GBP|Avg: £1,565 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 29, 2026
Retailer 5£650 GBP
Retailer 4£690 GBP
Retailer 3£691 GBP
Retailer 2£2,049 GBP
Do Amore Diamonds£2,981 GBP

13 data points across 5 retailers

5 retailers£650 GBP to £2,981 GBP

B+
Cheapest Retailer
-
£650 GBP
$866 USD
B+
Retailer 2
-
£690 GBP
$919 USD
View
B+
Retailer 3
-
£691 GBP
$920 USD
View
B
Retailer 4
-
£2,049 GBP
View
Most Expensive
B
Do Amore Diamonds
7-1778163 · Oct 29
£2,981 GBP
$3,970 USD
View
4 more retailers have this diamond
Prices start from £650 GBPSave up to £2,331 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.

B+
2.57ct Cushion
£650 GBP