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Cushion|Natural|GIA

1.20ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 5546897786

Certificate GIA 5546897786

Diamond specifications and retailer prices

From £1,478 GBP
HK$15,500 HKD
As of November 2, 2026
Save £1,921 GBP (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £3,399 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 5546897786. Listed at 15 retailers as of November 2, 2026, with prices from £1,478 to £3,399, a £1,921 spread on the same certified stone. MOH London lists it at £3,399. 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
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5546897786
Dimensions7.97 × 5.26 × 3.50 mm
L/W Ratio1.52
Top View
7.97 mm5.26 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5546897786
Side View
Table 64.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 66.5%

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: £3,399 GBP|Low: £1,478 GBP|High: £3,509 GBP|Avg: £2,105 GBP|-3.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 3, 2026
Retailer 7£1,478 GBP
Retailer 6£1,548 GBP
Retailer 3£1,743 GBP
Retailer 10£1,791 GBP
Retailer 12£1,959 GBP
Retailer 9£2,045 GBP
Retailer 2£2,074 GBP
Retailer 5£2,109 GBP
Retailer 4£2,239 GBP
Retailer 11£2,408 GBP
Retailer 8£2,422 GBP
MOH London£3,399 GBP

29 data points across 12 retailers

15 retailers£1,478 GBP to £3,399 GBP

B+
Cheapest Retailer
-
£1,478 GBP
HK$15,500 HKD
B+
Retailer 2
-
£1,548 GBP
₹197,836 INR
View
B+
Retailer 3
-
£1,743 GBP
SGD 3,161 SGD
View
B+
Retailer 4
-
£1,791 GBP
$2,404 USD
View
Final sale: no returns
B+
Retailer 5
-
£1,861 GBP
$2,498 USD
View
B+
Retailer 6
-
£1,863 GBP
$2,500 USD
View
B
Retailer 7
-
£1,959 GBP
$2,629 USD
View
B
Retailer 8
-
£2,045 GBP
$2,745 USD
View
B
Retailer 9
-
£2,074 GBP
View
B
Retailer 10
-
£2,109 GBP
$2,830 USD
View
B
Retailer 11
-
£2,150 GBP
A$4,438 AUD
View
Retailer 12
-
£2,239 GBP
A$4,623 AUD
View
Price last confirmed 26 days ago
B
Retailer 13
-
£2,408 GBP
ZAR 52,209 ZAR
View
B
Retailer 14
-
£2,422 GBP
€3,095 EUR
View
Most Expensive
B
MOH London
742F30963 · Nov 2
£3,399 GBP
View
14 more retailers have this diamond
Prices start from £1,478 GBPSave up to £1,921 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
£1,478 GBP