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Cushion|Natural|GIA

1.21ct I SI2 Cushion Natural Diamond

EX • I/SI2 • GIA 5566549839

Certificate GIA 5566549839

Diamond specifications and retailer prices

From £1,485 GBP
$1,993 USD
As of November 2, 2026
Save £1,483 GBP (50%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £2,968 GBP at MOH London · As of November 2, 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 5566549839. Listed at 9 retailers as of November 2, 2026, with prices from £1,485 to £2,968, a £1,483 spread on the same certified stone. MOH London lists it at £2,968. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38°
Pavilion angle35.02°
OriginNatural
Grading LabGIA
CertificateGIA 5566549839
Dimensions7.10 × 5.48 × 3.78 mm
L/W Ratio1.30
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
7.10 mm5.48 mm1.21 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5566549839
Side View
Table 62.0%Crown 38°Girdle: Very ThickPavilion 35.02°Culet: NoneDepth 69.0%

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: £2,968 GBP|Low: £1,367 GBP|High: £3,060 GBP|Avg: £1,829 GBP|-3.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 7£1,485 GBP
Retailer 6£1,530 GBP
Retailer 8£1,563 GBP
Retailer 5£1,662 GBP
Retailer 2£1,675 GBP
Retailer 9£1,728 GBP
Retailer 4£1,798 GBP
Retailer 3£1,844 GBP
MOH London£2,968 GBP

21 data points across 9 retailers

9 retailers£1,485 GBP to £2,968 GBP

A
Cheapest Retailer
-
£1,485 GBP
$1,993 USD
A
Retailer 2
-
£1,530 GBP
$2,053 USD
View
B+
Retailer 3
-
£1,563 GBP
$2,098 USD
View
Final sale: no returns
B+
Retailer 4
-
£1,662 GBP
$2,230 USD
View
A
Retailer 5
-
£1,675 GBP
View
B+
Retailer 6
-
£1,728 GBP
$2,319 USD
View
B+
Retailer 7
-
£1,798 GBP
$2,413 USD
View
B+
Retailer 8
-
£1,844 GBP
View
Most Expensive
B
MOH London
D1C81DA73 · Nov 2
£2,968 GBP
View
8 more retailers have this diamond
Prices start from £1,485 GBPSave up to £1,483 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
£1,485 GBP