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Cushion|Natural|GIA

1.20ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 7542838428

Certificate GIA 7542838428

Diamond specifications and retailer prices

From £1,440 GBP
HK$15,100 HKD
As of November 2, 2026
Save £1,877 GBP (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £3,317 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.2ct natural cushion diamond

This 1.2ct 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 7542838428. Listed at 15 retailers as of November 2, 2026, with prices from £1,440 to £3,317, a £1,877 spread on the same certified stone. MOH London lists it at £3,317. 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

1.20
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7542838428
Dimensions7.24 × 5.41 × 3.66 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Feather, Cavity, Indented Natural, Needle
Top View
7.24 mm5.41 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 7542838428
Side View
Table 64.0%CrownGirdle: VTN-VTKPavilionCulet: NoneDepth 67.6%

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: Nov 2
Current: £3,317 GBP|Low: £1,440 GBP|High: £3,391 GBP|Avg: £2,027 GBP|-2.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 3, 2026
Retailer 8£1,440 GBP
Retailer 7£1,512 GBP
Retailer 4£1,693 GBP
Retailer 11£1,747 GBP
Retailer 13£1,807 GBP
Retailer 3£1,912 GBP
Retailer 10£1,998 GBP
Retailer 2£2,024 GBP
Retailer 6£2,057 GBP
Retailer 5£2,153 GBP
Retailer 12£2,350 GBP
Retailer 9£2,364 GBP
MOH London£3,317 GBP

32 data points across 13 retailers

15 retailers£1,440 GBP to £3,317 GBP

B+
Cheapest Retailer
-
£1,440 GBP
HK$15,100 HKD
B+
Retailer 2
-
£1,512 GBP
₹193,184 INR
View
B+
Retailer 3
-
£1,693 GBP
SGD 3,070 SGD
View
B+
Retailer 4
-
£1,747 GBP
$2,345 USD
View
Final sale: no returns
B+
Retailer 5
-
£1,807 GBP
$2,425 USD
View
B+
Retailer 6
-
£1,807 GBP
$2,425 USD
View
B
Retailer 7
-
£1,912 GBP
$2,566 USD
View
B
Retailer 8
-
£1,998 GBP
$2,681 USD
View
B
Retailer 9
-
£2,024 GBP
View
B
Retailer 10
-
£2,057 GBP
$2,760 USD
View
B
Retailer 11
-
£2,067 GBP
A$4,268 AUD
View
Retailer 12
-
£2,153 GBP
A$4,445 AUD
View
Price last confirmed 26 days ago
B
Retailer 13
-
£2,350 GBP
ZAR 50,956 ZAR
View
B
Retailer 14
-
£2,364 GBP
€3,021 EUR
View
Most Expensive
B
MOH London
4F637D3B5 · Nov 2
£3,317 GBP
View
14 more retailers have this diamond
Prices start from £1,440 GBPSave up to £1,877 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+
1.20ct Cushion
£1,440 GBP