Princess|Natural|GIA

1.20ct I SI2 Princess Natural Diamond

ID • I/SI2 • GIA 5401

Certificate GIA 5401

Diamond specifications and retailer prices

From £1,541 GBP
As of November 6, 2026
Save £2,471 GBP (62%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: £4,011 GBP at NZ Jewellers · As of October 6, 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 I 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. Listed at 29 retailers as of November 5, 2026, with a 160% 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
I
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5401
Dimensions5.60 × 5.53 × 4.03 mm
L/W Ratio1.01
Top View
5.60 mm5.53 mm1.20 ctI / SI2
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5401
Side View
Table 67.0%CrownGirdle: MED-ETKPavilionCulet: NoneDepth 72.9%

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: £4,011 GBP|Low: £1,520 GBP|High: £4,011 GBP|Avg: £2,057 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 24, 2026
Retailer 7£1,541 GBP
Retailer 8£1,638 GBP
Retailer 2£1,738 GBP
Retailer 4£1,738 GBP
Retailer 3£1,818 GBP
Retailer 6£1,897 GBP
Retailer 5£2,005 GBP
NZ Jewellers£4,011 GBP

20 data points across 8 retailers

29 retailers£1,541 GBP to £4,011 GBP

A
Cheapest Retailer
-
£1,541 GBP
B+
Retailer 2
-
£1,638 GBP
View
Retailer 3
-
£1,738 GBP
View
Price last confirmed 54 days ago
Retailer 4
-
£1,738 GBP
View
Price last confirmed 39 days ago
Retailer 5
-
£1,738 GBP
View
Price last confirmed 8 days ago
Retailer 6
-
£1,738 GBP
View
Price last confirmed 29 days ago
Retailer 7
-
£1,738 GBP
View
Price last confirmed 36 days ago
Retailer 8
-
£1,738 GBP
View
Price last confirmed 30 days ago
Retailer 9
-
£1,738 GBP
View
Price last confirmed 27 days ago
B+
Retailer 10
-
£1,738 GBP
View
Retailer 11
-
£1,738 GBP
View
Price last confirmed 33 days ago
Retailer 12
-
£1,738 GBP
View
Price last confirmed 25 days ago
Retailer 13
-
£1,818 GBP
View
Price last confirmed 22 days ago
B+
Retailer 14
-
£1,818 GBP
View
Retailer 15
-
£1,818 GBP
View
Price last confirmed 38 days ago
B+
Retailer 16
-
£1,897 GBP
View
Retailer 17
-
£2,005 GBP
View
Price last confirmed 30 days ago
Retailer 18
-
£2,005 GBP
View
Price last confirmed 61 days ago
Retailer 19
-
£2,005 GBP
View
Price last confirmed 35 days ago
Retailer 20
-
£2,005 GBP
View
Price last confirmed 38 days ago
Retailer 21
-
£2,005 GBP
View
Price last confirmed 38 days ago
B+
Retailer 22
-
£2,005 GBP
View
Retailer 23
-
£2,005 GBP
View
Price last confirmed 28 days ago
Retailer 24
-
£4,011 GBP
View
Price last confirmed 34 days ago
B
Retailer 25
-
£4,011 GBP
View
Retailer 26
-
£4,011 GBP
View
Price last confirmed 39 days ago
Retailer 27
-
£4,011 GBP
View
Price last confirmed 28 days ago
Retailer 28
-
£4,011 GBP
View
Price last confirmed 38 days ago
Most Expensive
NZ Jewellers
6a3fbdb0-887c-41aa-836d-f20eecf464de · Oct 6
£4,011 GBP
$5,369 USD
View
Price last confirmed 31 days ago
28 more retailers have this diamond
Prices start from £1,541 GBPSave up to £2,471 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
£1,541 GBP