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Cushion|Natural|GIA

1.22ct I SI1 Cushion Natural Diamond

VG • I/SI1 • GIA 2558118541

Certificate GIA 2558118541

Diamond specifications and retailer prices

From £804 GBP
As of November 6, 2026
Save £1,107 GBP (58%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,911 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.22ct natural cushion diamond

This 1.22ct natural cushion sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2558118541. Listed at 17 retailers as of November 2, 2026, with prices from £804 to £1,911, a £1,107 spread on the same certified stone. MOH London lists it at £1,911. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.22
Carat
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42°
Pavilion angle30.7°
OriginNatural
Grading LabGIA
CertificateGIA 2558118541
Dimensions6.45 × 5.68 × 3.84 mm
L/W Ratio1.14
Top View
6.45 mm5.68 mm1.22 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2558118541
Side View
Table 61.0%Crown 42°Girdle: STK-VTKPavilion 30.7°Culet: NoneDepth 67.6%

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: £1,911 GBP|Low: £804 GBP|High: £1,960 GBP|Avg: £1,175 GBP|-2.5%
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
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Retailer 16
November 6, 2026
Retailer 9£804 GBP
Retailer 3£847 GBP
Retailer 4£944 GBP
Retailer 16£1,000 GBP
Retailer 6£1,024 GBP
Retailer 10£1,047 GBP
Retailer 8£1,102 GBP
Retailer 7£1,168 GBP
Retailer 12£1,180 GBP
Retailer 2£1,188 GBP
Retailer 13£1,192 GBP
Retailer 14£1,196 GBP
Retailer 5£1,210 GBP
Retailer 15£1,317 GBP
Retailer 11£1,495 GBP
MOH London£1,911 GBP

17 data points across 16 retailers

17 retailers£804 GBP to £1,911 GBP

A
Cheapest Retailer
-
£804 GBP
A
Retailer 2
-
£847 GBP
View
Final sale: no returns
A
Retailer 3
-
£944 GBP
View
A
Retailer 4
-
£1,000 GBP
View
A
Retailer 5
-
£1,024 GBP
View
A
Retailer 6
-
£1,047 GBP
View
Retailer 7
-
£1,102 GBP
View
Price last confirmed 9 days ago
A
Retailer 8
-
£1,168 GBP
View
A
Retailer 9
-
£1,180 GBP
View
A
Retailer 10
-
£1,188 GBP
View
A
Retailer 11
-
£1,192 GBP
View
A
Retailer 12
-
£1,196 GBP
View
A
Retailer 13
-
£1,210 GBP
View
A
Retailer 14
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£1,317 GBP
View
A
Retailer 15
-
£1,495 GBP
View
Retailer 16
-
£1,523 GBP
View
Price last confirmed 33 days ago
Most Expensive
B+
MOH London
002C676CA · Nov 2
£1,911 GBP
View
16 more retailers have this diamond
Prices start from £804 GBPSave up to £1,107 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
1.22ct Cushion
£804 GBP