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Princess|Natural|IGI

1.51ct I SI1 Princess Natural Diamond

VG • I/SI1 • IGI 557224032

Shape and cutting style on the report: Princess cut

Certificate IGI 557224032

Diamond specifications and retailer prices

From £2,371 GBP
As of November 1, 2026
Save £2,096 GBP (47%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £4,654 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 SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 557224032. Listed at 15 retailers as of November 1, 2026, with a 88% 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
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle51.1°
Pavilion angle39.7°
OriginNatural
Grading LabIGI
CertificateIGI 557224032
Dimensions6.08 × 6.08 × 4.66 mm
L/W Ratio1.00
Culet sizePointed
Top View
6.08 mm6.08 mm1.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 557224032
Side View
Table 76.0%Crown 51.1°Girdle: STK-THKPavilion 39.7°Culet: NoneDepth 76.6%

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 1
Current: £4,654 GBP|Low: £2,371 GBP|High: £4,695 GBP|Avg: £3,036 GBP|-0.9%
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
November 3, 2026
Retailer 6£2,371 GBP
Retailer 5£2,409 GBP
Retailer 4£2,430 GBP
Retailer 7£2,465 GBP
Retailer 9£2,534 GBP
Retailer 3£2,566 GBP
Retailer 12£2,671 GBP
Retailer 15£2,671 GBP
Retailer 8£2,774 GBP
Retailer 2£2,842 GBP
Retailer 14£3,082 GBP
Retailer 10£3,126 GBP
Retailer 13£3,283 GBP
Retailer 11£4,467 GBP
NZ Jewellers£4,654 GBP

33 data points across 15 retailers

15 retailers£2,371 GBP to £4,467 GBP

A
Cheapest Retailer
-
£2,371 GBP
Retailer 2
-
£2,409 GBP
View
Price last confirmed 16 days ago
A
Retailer 3
-
£2,430 GBP
View
A
Retailer 4
-
£2,465 GBP
View
Final sale: no returns
A
Retailer 5
-
£2,534 GBP
View
B+
Retailer 6
-
£2,566 GBP
View
Retailer 7
-
£2,671 GBP
View
Price last confirmed 8 days ago
A
Retailer 8
-
£2,671 GBP
View
A
Retailer 9
-
£2,774 GBP
View
A
Retailer 10
-
£2,842 GBP
View
B+
Retailer 11
-
£3,082 GBP
View
B+
Retailer 12
-
£3,126 GBP
View
B+
Retailer 13
-
£3,283 GBP
View
B
Retailer 14
-
£4,467 GBP
View
Most Expensive
NZ Jewellers
b46c432b-b43f-4585-b3e3-b76a0dc4436c · Oct 30
£4,654 GBP
$6,229 USD
View
Price last confirmed 7 days ago
14 more retailers have this diamond
Prices start from £2,371 GBPSave up to £2,096 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
£2,371 GBP