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Cushion|Natural|GIA

1.21ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 6565220844

Certificate GIA 6565220844

Diamond specifications and retailer prices

From £1,068 GBP
HK$11,200 HKD
As of November 1, 2026
Save £1,465 GBP (58%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £2,533 GBP at MOH London · As of October 26, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6565220844. Listed at 11 retailers as of October 26, 2026, with prices from £1,068 to £2,533, a £1,465 spread on the same certified stone. MOH London lists it at £2,533. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6565220844
Dimensions5.97 × 5.61 × 4.06 mm
L/W Ratio1.06
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather
Top View
5.97 mm5.61 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6565220844
Side View
Table 62.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 72.4%

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 1
Current: £2,533 GBP|Low: £1,068 GBP|High: £2,544 GBP|Avg: £1,630 GBP|-0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 6£1,068 GBP
Retailer 2£1,085 GBP
Retailer 3£1,409 GBP
Retailer 5£1,584 GBP
Retailer 9£1,639 GBP
Retailer 8£1,654 GBP
Retailer 7£1,775 GBP
Retailer 4£1,843 GBP
MOH London£2,533 GBP

25 data points across 9 retailers

11 retailers£1,068 GBP to £2,533 GBP

A
Cheapest Retailer
-
£1,068 GBP
HK$11,200 HKD
A
Retailer 2
-
£1,085 GBP
₹138,694 INR
View
B+
Retailer 3
-
£1,409 GBP
View
B+
Retailer 4
-
£1,490 GBP
SGD 2,702 SGD
View
B+
Retailer 5
-
£1,547 GBP
$2,076 USD
View
B+
Retailer 6
-
£1,584 GBP
View
B
Retailer 7
-
£1,639 GBP
$2,200 USD
View
B
Retailer 8
-
£1,775 GBP
ZAR 38,487 ZAR
View
B+
Retailer 9
-
£1,843 GBP
€2,355 EUR
View
Retailer 10
-
£1,885 GBP
A$3,891 AUD
View
Price last confirmed 27 days ago
Most Expensive
B
MOH London
2E3AE25B1 · Oct 26
£2,533 GBP
View
10 more retailers have this diamond
Prices start from £1,068 GBPSave up to £1,465 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
£1,068 GBP