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Cushion|Lab Grown|IGI

2.53ct G SI1 Cushion Lab Grown Diamond

ID • G/SI1 • IGI LG526272317

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG526272317

Diamond specifications and retailer prices

From £1,483 GBP
$1,990 USD
As of November 2, 2026
Save £3,078 GBP (67%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £5,420 GBP at Loose Grown Diamond · As of November 1, 2026
View at Loose Grown Diamond

About this 2.53ct lab-grown cushion diamond

This 2.53ct lab-grown cushion sits in the two to three carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG526272317 or 526272317. Listed at 10 retailers as of November 2, 2026, with a 208% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

2.53
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.6°
Pavilion angle29.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG526272317
Dimensions8.22 × 7.44 × 4.62 mm
L/W Ratio1.10
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.22 mm7.44 mm2.53 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG526272317
Side View
Table 64.0%Crown 32.6°Girdle: THK-VTKPavilion 29.9°Culet: NoneDepth 62.1%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £5,420 GBP|Low: £1,483 GBP|High: £7,587 GBP|Avg: £4,394 GBP
Loose Grown Diamond
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 6£1,483 GBP
Retailer 7£3,379 GBP
Retailer 5£3,500 GBP
Retailer 3£4,561 GBP
Retailer 2£4,727 GBP
Loose Grown Diamond£5,420 GBP
Retailer 4£7,497 GBP

43 data points across 7 retailers

10 retailers£1,483 GBP to £4,561 GBP

B
Cheapest Retailer
-
£1,483 GBP
$1,990 USD
B
Retailer 2
-
£3,184 GBP
$4,273 USD
View
B
Retailer 3
-
£3,379 GBP
$4,535 USD
View
Final sale: no returns
Retailer 4
-
£3,500 GBP
$4,697 USD
View
Price last confirmed 21 days ago
B
Retailer 5
-
£3,540 GBP
$4,750 USD
View
B
Retailer 6
-
£4,561 GBP
View
Retailer 7
-
£4,727 GBP
View
Price under review
Most Expensive
Loose Grown Diamond
526272317 · Nov 1
£5,420 GBP
$7,273 USD
View
Price under review
7 more retailers have this diamond
Prices start from £1,483 GBPSave up to £3,078 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
2.53ct Cushion
£1,483 GBP