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Princess|Natural|GIA

1.20ct I SI2 Princess Natural Diamond

GD • I/SI2 • GIA 1247108397

Certificate GIA 1247108397

Diamond specifications and retailer prices

From £1,570 GBP
As of November 4, 2026
Save £1,791 GBP (53%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £4,011 GBP at NZ Jewellers · As of September 20, 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 1247108397. Listed at 15 retailers as of November 2, 2026, with a 114% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.20
Carat
I
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1247108397
Dimensions5.60 × 5.53 × 4.03 mm
L/W Ratio1.01
Culet sizeNone
Top View
5.60 mm5.53 mm1.20 ctI / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1247108397
Side View
Table 67.0%CrownGirdle: MD-ETKPavilionCulet: NoneDepth 72.9%

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 4
Current: £1,886 GBP|Low: £1,528 GBP|High: £3,401 GBP|Avg: £2,205 GBP|-1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 5£1,528 GBP
Retailer 6£1,738 GBP
Retailer 1£1,886 GBP
Retailer 3£2,018 GBP
Retailer 2£2,382 GBP
Retailer 4£3,361 GBP

46 data points across 6 retailers

15 retailers£1,570 GBP to £3,361 GBP

Retailer 1
-
£1,528 GBP
Price last confirmed 12 days ago
B+
Retailer 2
-
£1,570 GBP
View
Retailer 3
-
£1,738 GBP
View
Price last confirmed 45 days ago
B+
Retailer 4
-
£1,775 GBP
View
B+
Retailer 5
-
£1,814 GBP
View
B+
Retailer 6
-
£1,886 GBP
View
B
Retailer 7
-
£2,002 GBP
View
B
Retailer 8
-
£2,002 GBP
View
Retailer 9
-
£2,005 GBP
View
Price last confirmed 45 days ago
B
Retailer 10
-
£2,018 GBP
View
B
Retailer 11
-
£2,069 GBP
View
B
Retailer 12
-
£2,382 GBP
View
C
Retailer 13
-
£2,761 GBP
View
C
Retailer 14
-
£3,361 GBP
View
Most Expensive
NZ Jewellers
58c35c0f-67ea-48a1-8095-ecf13f5869b3 · Sep 20
£4,011 GBP
$5,369 USD
View
Price last confirmed 47 days ago
14 more retailers have this diamond
Prices start from £1,570 GBPSave up to £1,791 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 Princess
£1,570 GBP