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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 $4,612 AUD
$3,232 USD
As of November 1, 2026
Save $4,438 AUD (49%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $9,419 AUD 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: Nov 1
Current: $9,049 AUD|Low: $4,395 AUD|High: $9,151 AUD|Avg: $5,907 AUD
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
November 2, 2026
Retailer 11$4,612 AUD
Retailer 9$4,680 AUD
Retailer 13$4,794 AUD
Retailer 12$4,987 AUD
Retailer 3$5,194 AUD
Retailer 4$5,194 AUD
Retailer 10$5,394 AUD
Retailer 7$5,528 AUD
Retailer 5$5,993 AUD
Retailer 6$6,080 AUD
Retailer 8$6,384 AUD
Retailer 2$8,686 AUD
NZ Jewellers$9,049 AUD

45 data points across 13 retailers

16 retailers$4,612 AUD to $9,049 AUD

B+
Cheapest Retailer
-
$4,612 AUD
$3,232 USD
Retailer 2
-
$4,680 AUD
$3,280 USD
View
Price last confirmed 15 days ago
B+
Retailer 3
-
$4,794 AUD
$3,360 USD
View
Final sale: no returns
B+
Retailer 4
-
$4,987 AUD
$3,495 USD
View
B+
Retailer 5
-
$5,194 AUD
$3,640 USD
View
B+
Retailer 6
-
$5,194 AUD
$3,640 USD
View
B+
Retailer 7
-
$5,394 AUD
$3,780 USD
View
Retailer 8
-
$5,407 AUD
$3,789 USD
View
Price last confirmed 41 days ago
B+
Retailer 9
-
$5,528 AUD
£3,050 GBP
View
B
Retailer 10
-
$5,993 AUD
$4,200 USD
View
B+
Retailer 11
-
$6,080 AUD
€4,058 EUR
View
Retailer 12
-
$6,238 AUD
$4,372 USD
View
Price last confirmed 39 days ago
B
Retailer 13
-
$6,384 AUD
ZAR 72,283 ZAR
View
B
Retailer 14
-
$8,686 AUD
£4,793 GBP
View
B
Retailer 15
-
$9,049 AUD
$6,342 USD
View
Most Expensive
NZ Jewellers
797c3299-f78b-4ca2-b160-8557bc9b8faf · Sep 21
$9,419 AUD
$6,601 USD
View
Price last confirmed 42 days ago
15 more retailers have this diamond
Prices start from $4,612 AUDSave up to $4,438 AUD

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
$4,612 AUD