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Cushion|Natural|GIA

1.21ct J SI1 Cushion Natural Diamond

GD • J/SI1 • GIA 1447136627

Certificate GIA 1447136627

Diamond specifications and retailer prices

From £1,079 GBP
$1,446 USD
As of October 31, 2026
Save £970 GBP (47%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £2,049 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 1447136627. Listed at 8 retailers as of October 31, 2026, with prices from £1,079 to £2,049, a £970 spread on the same certified stone. MOH London lists it at £2,049. 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1447136627
Dimensions6.36 × 5.71 × 3.92 mm
L/W Ratio1.11
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Needle, Knot
Top View
6.36 mm5.71 mm1.21 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1447136627
Side View
Table 62.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £2,049 GBP|Low: £989 GBP|High: £2,074 GBP|Avg: £1,331 GBP|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 10£1,047 GBP
Retailer 8£1,079 GBP
Retailer 11£1,090 GBP
Retailer 7£1,127 GBP
Retailer 6£1,169 GBP
Retailer 3£1,252 GBP
Retailer 2£1,310 GBP
Retailer 5£1,428 GBP
Retailer 9£1,526 GBP
Retailer 4£1,597 GBP
MOH London£2,049 GBP

32 data points across 11 retailers

8 retailers£1,079 GBP to £2,049 GBP

B+
Cheapest Retailer
-
£1,079 GBP
$1,446 USD
Final sale: no returns
B+
Retailer 2
-
£1,127 GBP
$1,510 USD
View
Retailer 3
-
£1,169 GBP
$1,567 USD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
£1,310 GBP
View
B+
Retailer 5
-
£1,428 GBP
ZAR 30,901 ZAR
View
Retailer 6
-
£1,526 GBP
A$3,146 AUD
View
Price last confirmed 27 days ago
B
Retailer 7
-
£1,597 GBP
€2,038 EUR
View
Most Expensive
B
MOH London
C2280FB64 · Nov 1
£2,049 GBP
View
7 more retailers have this diamond
Prices start from £1,079 GBPSave up to £970 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.

B+
1.21ct Cushion
£1,079 GBP