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Cushion|Natural|GIA

1.21ct I SI1 Cushion Natural Diamond

VG • I/SI1 • GIA 5456008822

Certificate GIA 5456008822

Diamond specifications and retailer prices

From £1,342 GBP
As of November 5, 2026
Save £1,523 GBP (53%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £2,865 GBP at MOH London · As of November 4, 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 SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 5456008822. Listed at 19 retailers as of November 4, 2026, with prices from £1,342 to £2,865, a £1,523 spread on the same certified stone. MOH London lists it at £2,865. 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

1.21
Carat
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5456008822
Dimensions5.86 × 5.72 × 3.91 mm
L/W Ratio1.02
Top View
5.86 mm5.72 mm1.21 ctI / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5456008822
Side View
Table 69.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.4%

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 5
Current: £2,865 GBP|Low: £1,311 GBP|High: £2,902 GBP|Avg: £1,822 GBP|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 8£1,311 GBP
Retailer 9£1,371 GBP
Retailer 6£1,396 GBP
Retailer 7£1,396 GBP
Retailer 2£1,575 GBP
Retailer 4£1,781 GBP
Retailer 5£2,001 GBP
Retailer 3£2,016 GBP
Retailer 10£2,016 GBP
MOH London£2,865 GBP

35 data points across 10 retailers

19 retailers£1,342 GBP to £2,865 GBP

Retailer 1
-
£1,311 GBP
Price last confirmed 10 days ago
A
Retailer 2
-
£1,342 GBP
View
A
Retailer 3
-
£1,371 GBP
View
Final sale: no returns
A
Retailer 4
-
£1,396 GBP
View
A
Retailer 5
-
£1,396 GBP
View
B+
Retailer 6
-
£1,513 GBP
View
B+
Retailer 7
-
£1,531 GBP
View
B+
Retailer 8
-
£1,561 GBP
View
A
Retailer 9
-
£1,575 GBP
View
B+
Retailer 10
-
£1,620 GBP
View
B+
Retailer 11
-
£1,632 GBP
View
B+
Retailer 12
-
£1,726 GBP
View
B+
Retailer 13
-
£1,726 GBP
View
B+
Retailer 14
-
£1,781 GBP
View
B+
Retailer 15
-
£1,786 GBP
View
B+
Retailer 16
-
£2,001 GBP
View
Retailer 17
-
£2,016 GBP
View
Price last confirmed 32 days ago
B+
Retailer 18
-
£2,016 GBP
View
Most Expensive
B
MOH London
FC29BDA01 · Nov 4
£2,865 GBP
View
18 more retailers have this diamond
Prices start from £1,342 GBPSave up to £1,523 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
£1,342 GBP