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Cushion|Natural|GIA

1.21ct J SI2 Cushion Natural Diamond

ID • J/SI2 • GIA 2556534848

Certificate GIA 2556534848

Diamond specifications and retailer prices

From £1,278 GBP
$1,715 USD
As of November 1, 2026
Save £1,367 GBP (52%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £2,645 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 J 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 2556534848. Listed at 11 retailers as of October 29, 2026, with prices from £1,278 to £2,645, a £1,367 spread on the same certified stone. MOH London lists it at £2,645. 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
J
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.16°
Pavilion angle36.57°
OriginNatural
Grading LabGIA
CertificateGIA 2556534848
Dimensions5.57 × 7.24 × 3.80 mm
L/W Ratio1.30
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
5.57 mm7.24 mm1.21 ctJ / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556534848
Side View
Table 64.0%Crown 34.16°Girdle: Very ThickPavilion 36.57°Culet: NoneDepth 68.2%

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: £2,645 GBP|Low: £1,078 GBP|High: £2,663 GBP|Avg: £1,660 GBP|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 7£1,278 GBP
Retailer 6£1,317 GBP
Retailer 8£1,345 GBP
Retailer 5£1,455 GBP
Retailer 2£1,460 GBP
Retailer 9£1,502 GBP
Retailer 4£1,560 GBP
Retailer 3£1,599 GBP
Retailer 10£1,624 GBP
MOH London£2,645 GBP

41 data points across 10 retailers

11 retailers£1,278 GBP to £2,645 GBP

A
Cheapest Retailer
-
£1,278 GBP
$1,715 USD
B+
Retailer 2
-
£1,317 GBP
$1,767 USD
View
B+
Retailer 3
-
£1,345 GBP
$1,805 USD
View
Final sale: no returns
B+
Retailer 4
-
£1,455 GBP
$1,952 USD
View
B+
Retailer 5
-
£1,460 GBP
View
B+
Retailer 6
-
£1,496 GBP
A$3,088 AUD
View
B+
Retailer 7
-
£1,502 GBP
$2,015 USD
View
B+
Retailer 8
-
£1,560 GBP
$2,094 USD
View
B+
Retailer 9
-
£1,599 GBP
View
B+
Retailer 10
-
£1,624 GBP
$2,179 USD
View
Most Expensive
B
MOH London
6C22DE6EA · Oct 29
£2,645 GBP
View
10 more retailers have this diamond
Prices start from £1,278 GBPSave up to £1,367 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
£1,278 GBP