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Cushion|Natural|GIA

1.21ct I SI2 Cushion Natural Diamond

ID • I/SI2 • GIA 2557315146

Certificate GIA 2557315146

Diamond specifications and retailer prices

From £1,089 GBP
₹138,929 INR
As of November 1, 2026
Save £1,608 GBP (60%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £2,697 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.21ct natural cushion diamond

This 1.21ct natural cushion sits in the classic one-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 2557315146. Listed at 15 retailers as of October 29, 2026, with prices from £1,089 to £2,697, a £1,608 spread on the same certified stone. MOH London lists it at £2,697. 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

1.21
Carat
I
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557315146
Dimensions7.38 × 5.50 × 3.60 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Cavity, Crystal, Indented Natural, Needle, Natural
Top View
7.38 mm5.50 mm1.21 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557315146
Side View
Table 65.0%CrownGirdle: THN-XTKPavilionCulet: NoneDepth 65.4%

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 1
Current: £2,697 GBP|Low: £1,089 GBP|High: £2,794 GBP|Avg: £1,578 GBP|-3.5%
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
November 2, 2026
Retailer 8£1,089 GBP
Retailer 5£1,204 GBP
Retailer 9£1,241 GBP
Retailer 11£1,393 GBP
Retailer 3£1,412 GBP
Retailer 4£1,418 GBP
Retailer 2£1,513 GBP
Retailer 13£1,531 GBP
Retailer 10£1,557 GBP
Retailer 12£1,634 GBP
Retailer 7£1,679 GBP
Retailer 6£1,777 GBP
MOH London£2,697 GBP

22 data points across 13 retailers

15 retailers£1,089 GBP to £2,697 GBP

A
Cheapest Retailer
-
£1,089 GBP
₹138,929 INR
A
Retailer 2
-
£1,204 GBP
$1,613 USD
View
A
Retailer 3
-
£1,241 GBP
$1,663 USD
View
A
Retailer 4
-
£1,393 GBP
$1,866 USD
View
B+
Retailer 5
-
£1,412 GBP
$1,892 USD
View
Final sale: no returns
A
Retailer 6
-
£1,418 GBP
$1,900 USD
View
A
Retailer 7
-
£1,469 GBP
A$3,028 AUD
View
Retailer 8
-
£1,508 GBP
$2,020 USD
View
Price last confirmed 24 days ago
A
Retailer 9
-
£1,513 GBP
View
A
Retailer 10
-
£1,531 GBP
$2,051 USD
View
A
Retailer 11
-
£1,557 GBP
$2,086 USD
View
B+
Retailer 12
-
£1,634 GBP
$2,189 USD
View
A
Retailer 13
-
£1,679 GBP
View
B+
Retailer 14
-
£1,777 GBP
€2,267 EUR
View
Most Expensive
B
MOH London
89D5D95D6 · Oct 29
£2,697 GBP
View
14 more retailers have this diamond
Prices start from £1,089 GBPSave up to £1,608 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
1.21ct Cushion
£1,089 GBP