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Cushion|Natural|GIA

1.21ct I SI2 Cushion Natural Diamond

VG • I/SI2 • GIA 1539449998

Certificate GIA 1539449998

Diamond specifications and retailer prices

From £974 GBP
HK$10,200 HKD
As of November 1, 2026
Save £1,279 GBP (57%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £2,253 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 1539449998. Listed at 14 retailers as of November 1, 2026, with prices from £974 to £2,253, a £1,279 spread on the same certified stone. MOH London lists it at £2,253. 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
FluorescenceNone
Pavilion angle31.8°
OriginNatural
Grading LabGIA
CertificateGIA 1539449998
Dimensions6.10 × 5.89 × 3.86 mm
L/W Ratio1.04
Girdle conditionFaceted
Top View
6.10 mm5.89 mm1.21 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1539449998
Side View
Table 63.0%CrownGirdle: STK-VTKPavilion 31.8°Culet: NoneDepth 65.6%

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 1
Current: £2,253 GBP|Low: £974 GBP|High: £2,400 GBP|Avg: £1,383 GBP|-6.1%
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 11£974 GBP
Retailer 5£1,045 GBP
Retailer 9£1,085 GBP
Retailer 7£1,091 GBP
Retailer 13£1,171 GBP
Retailer 12£1,176 GBP
Retailer 10£1,179 GBP
Retailer 4£1,231 GBP
Retailer 6£1,296 GBP
Retailer 8£1,312 GBP
Retailer 2£1,782 GBP
Retailer 3£2,030 GBP
MOH London£2,253 GBP

36 data points across 13 retailers

14 retailers£974 GBP to £2,253 GBP

A
Cheapest Retailer
-
£974 GBP
HK$10,200 HKD
A
Retailer 2
-
£1,045 GBP
$1,400 USD
View
A
Retailer 3
-
£1,085 GBP
$1,454 USD
View
A
Retailer 4
-
£1,091 GBP
$1,462 USD
View
Final sale: no returns
A
Retailer 5
-
£1,171 GBP
$1,570 USD
View
A
Retailer 6
-
£1,176 GBP
$1,576 USD
View
A
Retailer 7
-
£1,179 GBP
$1,580 USD
View
A
Retailer 8
-
£1,231 GBP
$1,650 USD
View
A
Retailer 9
-
£1,296 GBP
$1,736 USD
View
A
Retailer 10
-
£1,312 GBP
View
B+
Retailer 11
-
£1,435 GBP
A$2,958 AUD
View
B+
Retailer 12
-
£1,782 GBP
€2,274 EUR
View
Retailer 13
-
£2,030 GBP
$2,721 USD
View
Price last confirmed 9 days ago
Most Expensive
B
MOH London
7C686F27C · Nov 1
£2,253 GBP
View
13 more retailers have this diamond
Prices start from £974 GBPSave up to £1,279 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
£974 GBP