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Cushion|Natural|GIA

1.20ct G SI2 Cushion Natural Diamond

EX • G/SI2 • GIA 2558257226

Certificate GIA 2558257226

Diamond specifications and retailer prices

From £1,300 GBP
As of November 6, 2026
Save £1,638 GBP (56%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £2,938 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.2ct natural cushion diamond

This 1.2ct natural cushion sits in the classic one-carat band, graded G 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 2558257226. Listed at 12 retailers as of November 4, 2026, with prices from £1,300 to £2,938, a £1,638 spread on the same certified stone. MOH London lists it at £2,938. 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

1.20
Carat
G
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2558257226
Dimensions7.05 × 5.42 × 3.92 mm
L/W Ratio1.30
Top View
7.05 mm5.42 mm1.20 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2558257226
Side View
Table 68.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 72.2%

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: Nov 6
Current: £2,938 GBP|Low: £1,281 GBP|High: £3,102 GBP|Avg: £1,837 GBP|-5.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9£1,300 GBP
Retailer 7£1,349 GBP
Retailer 11£1,406 GBP
Retailer 5£1,428 GBP
Retailer 3£1,535 GBP
Retailer 8£1,614 GBP
Retailer 10£1,648 GBP
Retailer 4£1,827 GBP
Retailer 2£2,087 GBP
Retailer 6£2,652 GBP
MOH London£2,938 GBP

37 data points across 11 retailers

12 retailers£1,300 GBP to £2,938 GBP

A
Cheapest Retailer
-
£1,300 GBP
A
Retailer 2
-
£1,349 GBP
View
A
Retailer 3
-
£1,406 GBP
View
Final sale: no returns
A
Retailer 4
-
£1,428 GBP
View
A
Retailer 5
-
£1,535 GBP
View
A
Retailer 6
-
£1,614 GBP
View
A
Retailer 7
-
£1,648 GBP
View
A
Retailer 8
-
£1,827 GBP
View
B+
Retailer 9
-
£1,830 GBP
View
B+
Retailer 10
-
£2,087 GBP
View
B+
Retailer 11
-
£2,652 GBP
View
Most Expensive
B
MOH London
EB48AB54F · Nov 4
£2,938 GBP
View
11 more retailers have this diamond
Prices start from £1,300 GBPSave up to £1,638 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
1.20ct Cushion
£1,300 GBP