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Cushion|Lab Grown|IGI

2.56ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG816606217

Shape and cutting style on the report: Antique cushion cut

Certificate IGI LG816606217

Diamond specifications and retailer prices

From £323 GBP
$433 USD
As of October 29, 2026
Save £1,156 GBP (78%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,480 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 2.56ct lab-grown cushion diamond

This 2.56ct 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 LG816606217 or 816606217. Listed at 15 retailers as of October 29, 2026, with prices from £323 to £1,480, a £1,156 spread on the same certified stone. MOH London lists it at £1,480. 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

2.56
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816606217
Dimensions9.71 × 7.27 × 4.54 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.71 mm7.27 mm2.56 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816606217
Side View
Table 67.0%Crown 35.7°Girdle: STK-THKPavilion 41°Culet: LargeDepth 62.4%

Caratlytics Score

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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 29
Current: £1,480 GBP|Low: £307 GBP|High: £1,480 GBP|Avg: £776 GBP|+1.4%
MOH London
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
October 30, 2026
Retailer 3£323 GBP
Retailer 11£362 GBP
Retailer 6£393 GBP
Retailer 7£397 GBP
Retailer 4£401 GBP
Retailer 9£605 GBP
Retailer 12£630 GBP
Retailer 10£644 GBP
Retailer 8£644 GBP
Retailer 2£661 GBP
Retailer 14£1,124 GBP
Retailer 15£1,288 GBP
Retailer 5£1,312 GBP
Retailer 13£1,446 GBP
MOH London£1,480 GBP

35 data points across 15 retailers

15 retailers£323 GBP to £1,480 GBP

A
Cheapest Retailer
-
£323 GBP
$433 USD
A
Retailer 2
-
£362 GBP
$485 USD
View
A
Retailer 3
-
£393 GBP
$527 USD
View
Final sale: no returns
Retailer 4
-
£397 GBP
$532 USD
View
Price last confirmed 18 days ago
A
Retailer 5
-
£401 GBP
$537 USD
View
A
Retailer 6
-
£605 GBP
$810 USD
View
B+
Retailer 7
-
£630 GBP
$844 USD
View
B+
Retailer 8
-
£644 GBP
$863 USD
View
B+
Retailer 9
-
£644 GBP
€822 EUR
View
B+
Retailer 10
-
£661 GBP
View
B
Retailer 11
-
£1,124 GBP
$1,506 USD
View
B
Retailer 12
-
£1,288 GBP
$1,726 USD
View
B
Retailer 13
-
£1,312 GBP
$1,758 USD
View
B
Retailer 14
-
£1,446 GBP
$1,937 USD
View
Most Expensive
B
MOH London
LG816606217 · Oct 29
£1,480 GBP
View
14 more retailers have this diamond
Prices start from £323 GBPSave up to £1,156 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
2.56ct Cushion
£323 GBP