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Princess|Natural|IGI

1.51ct I SI2 Princess Natural Diamond

VG • I/SI2 • IGI 660411133

Shape and cutting style on the report: Princess cut

Certificate IGI 660411133

Diamond specifications and retailer prices

From £1,869 GBP
As of November 4, 2026
Save £2,496 GBP (57%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £4,365 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 very-good cut grade and certified by IGI 660411133. Listed at 16 retailers as of November 4, 2026, with a 134% 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

1.51
Carat
I
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle49.9°
Pavilion angle38.3°
OriginNatural
Grading LabIGI
CertificateIGI 660411133
Dimensions6.22 × 6.02 × 4.59 mm
L/W Ratio1.03
Culet sizeNone
Top View
6.22 mm6.02 mm1.51 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 660411133
Side View
Table 70.0%Crown 49.9°Girdle: MED-STKPavilion 38.3°Culet: NoneDepth 76.2%

Caratlytics Score

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

Price History

Last verified: Nov 4
Current: £4,365 GBP|Low: £1,869 GBP|High: £4,365 GBP|Avg: £2,365 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 8£1,869 GBP
Retailer 14£1,901 GBP
Retailer 15£1,927 GBP
Retailer 4£1,942 GBP
Retailer 16£1,995 GBP
Retailer 5£2,019 GBP
Retailer 2£2,025 GBP
Retailer 3£2,088 GBP
Retailer 12£2,088 GBP
Retailer 10£2,168 GBP
Retailer 7£2,194 GBP
Retailer 13£2,409 GBP
Retailer 9£2,430 GBP
Retailer 6£2,484 GBP
Retailer 11£3,659 GBP
NZ Jewellers£4,365 GBP

46 data points across 16 retailers

16 retailers£1,869 GBP to £4,365 GBP

A
Cheapest Retailer
-
£1,869 GBP
Retailer 2
-
£1,901 GBP
View
Price last confirmed 16 days ago
A
Retailer 3
-
£1,927 GBP
View
Final sale: no returns
A
Retailer 4
-
£1,942 GBP
View
B+
Retailer 5
-
£1,995 GBP
View
B+
Retailer 6
-
£2,019 GBP
View
A
Retailer 7
-
£2,025 GBP
View
Retailer 8
-
£2,088 GBP
View
Price last confirmed 8 days ago
B+
Retailer 9
-
£2,088 GBP
View
B+
Retailer 10
-
£2,168 GBP
View
B+
Retailer 11
-
£2,194 GBP
View
B+
Retailer 12
-
£2,409 GBP
View
B+
Retailer 13
-
£2,430 GBP
View
B+
Retailer 14
-
£3,659 GBP
View
B
Retailer 15
-
£4,365 GBP
View
Most Expensive
NZ Jewellers
b8bef12e-90d0-41da-8a5a-eb6c28192182 · Oct 30
£4,365 GBP
$5,843 USD
View
Price last confirmed 7 days ago
15 more retailers have this diamond
Prices start from £1,869 GBPSave up to £2,496 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
1.51ct Princess
£1,869 GBP