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Cushion|Natural|GIA

2.50ct I SI2 Cushion Natural Diamond

EX • I/SI2 • GIA 1558982299

Certificate GIA 1558982299

Diamond specifications and retailer prices

From £11,523 GBP
$15,440 USD
As of October 28, 2026
Save £9,013 GBP (44%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £20,537 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 2.5ct natural cushion diamond

This 2.5ct natural cushion sits in the two to three carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1558982299. Listed at 15 retailers as of October 28, 2026, with prices from £11,523 to £20,537, a £9,013 spread on the same certified stone. MOH London lists it at £20,537. 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

2.50
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.78°
OriginNatural
Grading LabGIA
CertificateGIA 1558982299
Dimensions9.14 × 7.33 × 5.12 mm
L/W Ratio1.25
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
9.14 mm7.33 mm2.50 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558982299
Side View
Table 67.0%Crown 31.78°Girdle: MED-VTKPavilionCulet: NoneDepth 69.9%

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 28
Current: £20,537 GBP|Low: £11,240 GBP|High: £20,556 GBP|Avg: £14,042 GBP|+7.1%
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
Retailer 16
October 31, 2026
Retailer 12£11,523 GBP
Retailer 5£11,894 GBP
Retailer 13£12,024 GBP
Retailer 6£12,535 GBP
Retailer 4£12,841 GBP
Retailer 15£12,926 GBP
Retailer 16£13,079 GBP
Retailer 7£13,309 GBP
Retailer 9£13,497 GBP
Retailer 3£13,972 GBP
Retailer 11£14,371 GBP
Retailer 8£14,819 GBP
Retailer 10£15,303 GBP
Retailer 2£15,871 GBP
Retailer 14£16,030 GBP
MOH London£20,537 GBP

30 data points across 16 retailers

15 retailers£11,523 GBP to £20,537 GBP

A
Cheapest Retailer
-
£11,523 GBP
$15,440 USD
A
Retailer 2
-
£11,894 GBP
$15,936 USD
View
A
Retailer 3
-
£12,024 GBP
$16,111 USD
View
A
Retailer 4
-
£12,535 GBP
$16,795 USD
View
Final sale: no returns
A
Retailer 5
-
£12,841 GBP
$17,206 USD
View
A
Retailer 6
-
£12,926 GBP
CA$24,055 CAD
View
B+
Retailer 7
-
£13,079 GBP
$17,525 USD
View
B+
Retailer 8
-
£13,309 GBP
$17,832 USD
View
B+
Retailer 9
-
£13,497 GBP
View
B+
Retailer 10
-
£13,972 GBP
$18,721 USD
View
B+
Retailer 11
-
£14,371 GBP
$19,256 USD
View
B+
Retailer 12
-
£15,303 GBP
View
B+
Retailer 13
-
£15,871 GBP
€20,253 EUR
View
B+
Retailer 14
-
£16,030 GBP
$21,478 USD
View
Most Expensive
B
MOH London
B32E96BEB · Oct 29
£20,537 GBP
View
14 more retailers have this diamond
Prices start from £11,523 GBPSave up to £9,013 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
2.50ct Cushion
£11,523 GBP