CaratHunter
Plans
Princess|Natural|GIA

1.51ct I SI2 Princess Natural Diamond

EX • I/SI2 • GIA 2225435085

Certificate GIA 2225435085

Diamond specifications and retailer prices

From £4,220 GBP
As of November 4, 2026
Save £3,552 GBP (46%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £8,847 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural princess diamond

This 1.51ct natural princess sits in the one-and-a-half to two 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 2225435085. Listed at 8 retailers as of November 4, 2026, with a 84% 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

1.51
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishGood
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2225435085
Dimensions6.36 × 6.17 × 4.57 mm
L/W Ratio1.03
Culet sizeNone
Top View
6.36 mm6.17 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishGood
SymmetryGood
FluorescenceFaint
CertificateGIA 2225435085
Side View
Table 69.0%CrownGirdle: XTN-ETKPavilionCulet: NoneDepth 74.1%

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: £5,747 GBP|Low: £4,220 GBP|High: £7,886 GBP|Avg: £5,438 GBP|+2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 4£4,220 GBP
Retailer 6£4,792 GBP
Retailer 8£4,792 GBP
Retailer 2£5,071 GBP
Retailer 5£5,222 GBP
Retailer 7£5,529 GBP
Retailer 1£5,747 GBP
Retailer 3£7,771 GBP

44 data points across 8 retailers

8 retailers£4,220 GBP to £7,771 GBP

B+
Cheapest Retailer
-
£4,220 GBP
B
Retailer 2
-
£4,792 GBP
View
B
Retailer 3
-
£4,792 GBP
View
B
Retailer 4
-
£5,071 GBP
View
B
Retailer 5
-
£5,529 GBP
View
B
Retailer 6
-
£5,747 GBP
View
B
Retailer 7
-
£7,771 GBP
View
Most Expensive
NZ Jewellers
2ccbac37-7cef-46aa-8772-ec6693762ba0 · Oct 30
£8,847 GBP
$11,841 USD
View
Price last confirmed 7 days ago
7 more retailers have this diamond
Prices start from £4,220 GBPSave up to £3,552 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+
1.51ct Princess
£4,220 GBP