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Cushion|Natural|GIA

1.21ct J SI1 Cushion Natural Diamond

VG • J/SI1 • GIA 3435760109

Certificate GIA 3435760109

Diamond specifications and retailer prices

From £1,046 GBP
$1,401 USD
As of November 2, 2026
Save £1,145 GBP (52%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £2,190 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 3435760109. Listed at 14 retailers as of November 1, 2026, with prices from £1,046 to £2,190, a £1,145 spread on the same certified stone. MOH London lists it at £2,190. 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
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3435760109
Dimensions5.81 × 5.71 × 4.00 mm
L/W Ratio1.02
Top View
5.81 mm5.71 mm1.21 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 3435760109
Side View
Table 64.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 70.1%

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: £2,190 GBP|Low: £871 GBP|High: £2,216 GBP|Avg: £1,402 GBP|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 6£1,046 GBP
Retailer 5£1,056 GBP
Retailer 2£1,219 GBP
Retailer 8£1,260 GBP
Retailer 3£1,401 GBP
Retailer 4£1,526 GBP
Retailer 7£1,631 GBP
MOH London£2,190 GBP

40 data points across 8 retailers

14 retailers£1,046 GBP to £2,190 GBP

A
Cheapest Retailer
-
£1,046 GBP
$1,401 USD
Final sale: no returns
A
Retailer 2
-
£1,050 GBP
$1,407 USD
View
A
Retailer 3
-
£1,056 GBP
$1,415 USD
View
B+
Retailer 4
-
£1,196 GBP
$1,602 USD
View
B+
Retailer 5
-
£1,198 GBP
$1,605 USD
View
A
Retailer 6
-
£1,219 GBP
View
B+
Retailer 7
-
£1,260 GBP
$1,688 USD
View
B+
Retailer 8
-
£1,336 GBP
$1,790 USD
View
B+
Retailer 9
-
£1,336 GBP
$1,790 USD
View
B+
Retailer 10
-
£1,381 GBP
$1,850 USD
View
B+
Retailer 11
-
£1,401 GBP
View
B+
Retailer 12
-
£1,526 GBP
ZAR 33,028 ZAR
View
Retailer 13
-
£1,631 GBP
A$3,362 AUD
View
Price last confirmed 27 days ago
Most Expensive
B
MOH London
8D42DC9CD · Nov 1
£2,190 GBP
View
13 more retailers have this diamond
Prices start from £1,046 GBPSave up to £1,145 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
£1,046 GBP