Princess|Natural|IGI

1.31ct I SI1 Princess Natural Diamond

EX • I/SI1 • IGI 523287337

Shape and cutting style on the report: Princess cut

Certificate IGI 523287337

Diamond specifications and retailer prices

From £2,412 GBP
$3,232 USD
As of October 30, 2026
Save £2,321 GBP (49%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £4,927 GBP at NZ Jewellers · As of September 21, 2026
View at NZ Jewellers

About this 1.31ct natural princess diamond

This 1.31ct natural princess sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 523287337. Listed at 16 retailers as of October 30, 2026, with a 96% 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

1.31
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle60.1°
Pavilion angle38°
OriginNatural
Grading LabIGI
CertificateIGI 523287337
Dimensions5.86 × 5.84 × 4.25 mm
L/W Ratio1.00
Culet sizePointed
Top View
5.86 mm5.84 mm1.31 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 523287337
Side View
Table 72.5%Crown 60.1°Girdle: MediumPavilion 38°Culet: NoneDepth 72.8%

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: Oct 30
Current: £4,733 GBP|Low: £2,299 GBP|High: £4,787 GBP|Avg: £3,082 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
October 31, 2026
Retailer 11£2,412 GBP
Retailer 9£2,448 GBP
Retailer 13£2,508 GBP
Retailer 12£2,608 GBP
Retailer 3£2,717 GBP
Retailer 4£2,717 GBP
Retailer 10£2,821 GBP
Retailer 6£2,891 GBP
Retailer 5£3,135 GBP
Retailer 7£3,181 GBP
Retailer 2£3,339 GBP
Retailer 8£4,568 GBP
NZ Jewellers£4,733 GBP

43 data points across 13 retailers

16 retailers£2,412 GBP to £4,733 GBP

B+
Cheapest Retailer
-
£2,412 GBP
$3,232 USD
Retailer 2
-
£2,448 GBP
$3,280 USD
View
Price last confirmed 15 days ago
B+
Retailer 3
-
£2,508 GBP
$3,360 USD
View
Final sale: no returns
B+
Retailer 4
-
£2,608 GBP
$3,495 USD
View
B+
Retailer 5
-
£2,717 GBP
$3,640 USD
View
B+
Retailer 6
-
£2,717 GBP
$3,640 USD
View
B+
Retailer 7
-
£2,821 GBP
$3,780 USD
View
Retailer 8
-
£2,828 GBP
$3,789 USD
View
Price last confirmed 41 days ago
B+
Retailer 9
-
£2,891 GBP
View
B
Retailer 10
-
£3,135 GBP
$4,200 USD
View
B+
Retailer 11
-
£3,181 GBP
€4,059 EUR
View
Retailer 12
-
£3,263 GBP
$4,372 USD
View
Price last confirmed 39 days ago
B
Retailer 13
-
£3,339 GBP
ZAR 72,283 ZAR
View
B
Retailer 14
-
£4,568 GBP
View
B
Retailer 15
-
£4,733 GBP
$6,342 USD
View
Most Expensive
NZ Jewellers
797c3299-f78b-4ca2-b160-8557bc9b8faf · Sep 21
£4,927 GBP
$6,601 USD
View
Price last confirmed 42 days ago
15 more retailers have this diamond
Prices start from £2,412 GBPSave up to £2,321 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+
1.31ct Princess
£2,412 GBP