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Cushion|Natural|GIA

1.21ct I SI2 Cushion Natural Diamond

VG • I/SI2 • GIA 1553581859

Certificate GIA 1553581859

Diamond specifications and retailer prices

From £908 GBP
HK$9,500 HKD
As of November 2, 2026
Save £1,294 GBP (59%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £2,202 GBP at MOH London · As of November 1, 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 1553581859. Listed at 13 retailers as of November 1, 2026, with prices from £908 to £2,202, a £1,294 spread on the same certified stone. MOH London lists it at £2,202. 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
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1553581859
Dimensions6.08 × 5.96 × 4.08 mm
L/W Ratio1.02
Girdle conditionFaceted
Top View
6.08 mm5.96 mm1.21 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1553581859
Side View
Table 69.0%CrownGirdle: STK-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 2
Current: £2,202 GBP|Low: £898 GBP|High: £2,332 GBP|Avg: £1,410 GBP|-4.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 2£908 GBP
Retailer 10£999 GBP
Retailer 8£1,067 GBP
Retailer 3£1,081 GBP
Retailer 12£1,125 GBP
Retailer 11£1,134 GBP
Retailer 9£1,205 GBP
Retailer 7£1,207 GBP
Retailer 6£1,658 GBP
Retailer 4£1,877 GBP
Retailer 5£1,978 GBP
MOH London£2,202 GBP

34 data points across 12 retailers

13 retailers£908 GBP to £2,202 GBP

A
Cheapest Retailer
-
£908 GBP
HK$9,500 HKD
A
Retailer 2
-
£999 GBP
$1,338 USD
View
A
Retailer 3
-
£1,067 GBP
$1,429 USD
View
Final sale: no returns
A
Retailer 4
-
£1,081 GBP
$1,448 USD
View
A
Retailer 5
-
£1,125 GBP
$1,508 USD
View
A
Retailer 6
-
£1,134 GBP
$1,520 USD
View
A
Retailer 7
-
£1,205 GBP
View
A
Retailer 8
-
£1,207 GBP
$1,618 USD
View
B+
Retailer 9
-
£1,333 GBP
A$2,748 AUD
View
B+
Retailer 10
-
£1,658 GBP
€2,116 EUR
View
Retailer 11
-
£1,877 GBP
$2,516 USD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
£1,978 GBP
$2,650 USD
View
Most Expensive
B
MOH London
42154442C · Nov 1
£2,202 GBP
View
12 more retailers have this diamond
Prices start from £908 GBPSave up to £1,294 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
£908 GBP