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Princess|Natural|GIA

1.20ct J SI2 Princess Natural Diamond

EX • J/SI2 • GIA 1558156222

Certificate GIA 1558156222

Diamond specifications and retailer prices

From £1,061 GBP
As of November 6, 2026
Save £1,390 GBP (57%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,558 GBP at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 1.2ct natural princess diamond

This 1.2ct natural princess sits in the classic one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1558156222. Listed at 13 retailers as of November 2, 2026, with a 131% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1558156222
Dimensions5.74 × 5.73 × 4.16 mm
L/W Ratio1.00
Girdle conditionPolished
Top View
5.74 mm5.73 mm1.20 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558156222
Side View
Table 71.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 72.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £1,165 GBP|Low: £1,042 GBP|High: £2,586 GBP|Avg: £1,502 GBP|-6.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 11£1,061 GBP
Retailer 1£1,165 GBP
Retailer 3£1,169 GBP
Retailer 7£1,174 GBP
Retailer 6£1,236 GBP
Retailer 10£1,293 GBP
Retailer 5£1,368 GBP
Retailer 2£1,374 GBP
Retailer 4£1,901 GBP
Retailer 8£2,132 GBP
Retailer 9£2,451 GBP

36 data points across 11 retailers

13 retailers£1,061 GBP to £2,451 GBP

A
Cheapest Retailer
-
£1,061 GBP
A
Retailer 2
-
£1,165 GBP
View
B+
Retailer 3
-
£1,169 GBP
View
Final sale: no returns
A
Retailer 4
-
£1,174 GBP
View
A
Retailer 5
-
£1,236 GBP
View
B+
Retailer 6
-
£1,293 GBP
View
B+
Retailer 7
-
£1,368 GBP
View
B+
Retailer 8
-
£1,374 GBP
View
B+
Retailer 9
-
£1,485 GBP
View
B
Retailer 10
-
£1,901 GBP
View
B
Retailer 11
-
£2,132 GBP
View
B
Retailer 12
-
£2,451 GBP
View
Most Expensive
NZ Jewellers
1d7bf869-29f9-4eb5-b107-8d05274bdd6c · Sep 25
£3,558 GBP
$4,762 USD
View
Price last confirmed 42 days ago
12 more retailers have this diamond
Prices start from £1,061 GBPSave up to £1,390 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
1.20ct Princess
£1,061 GBP