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Princess|Natural|IGI

1.51ct I SI1 Princess Natural Diamond

EX • I/SI1 • IGI 683576294

Shape and cutting style on the report: Princess cut

Certificate IGI 683576294

Diamond specifications and retailer prices

From $3,820 AUD
As of November 6, 2026
Save $3,992 AUD (51%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $8,162 AUD at NZ Jewellers · As of October 17, 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 top-tier cut grade and certified by IGI 683576294. Listed at 17 retailers as of November 4, 2026, with a 104% 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle39°
Pavilion angle37.9°
OriginNatural
Grading LabIGI
CertificateIGI 683576294
Dimensions6.47 × 6.42 × 4.35 mm
L/W Ratio1.01
Culet sizePointed
Top View
6.47 mm6.42 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 683576294
Side View
Table 71.0%Crown 39°Girdle: MediumPavilion 37.9°Culet: NoneDepth 67.8%

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 6
Current: $3,820 AUD|Low: $3,820 AUD|High: $7,917 AUD|Avg: $5,152 AUD|-2.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 1$3,820 AUD
Retailer 6$4,158 AUD
Retailer 2$4,420 AUD
Retailer 4$4,935 AUD
Retailer 3$5,453 AUD
Retailer 5$5,717 AUD
Retailer 7$7,813 AUD

27 data points across 7 retailers

17 retailers$3,820 AUD to $7,813 AUD

A
Cheapest Retailer
-
$3,820 AUD
A
Retailer 2
-
$4,158 AUD
View
A
Retailer 3
-
$4,323 AUD
View
Final sale: no returns
A
Retailer 4
-
$4,376 AUD
View
A
Retailer 5
-
$4,381 AUD
View
A
Retailer 6
-
$4,420 AUD
View
A
Retailer 7
-
$4,662 AUD
View
Retailer 8
-
$4,685 AUD
View
Price last confirmed 21 days ago
Retailer 9
-
$4,685 AUD
View
Price last confirmed 19 days ago
Retailer 10
-
$4,864 AUD
View
Price last confirmed 22 days ago
A
Retailer 11
-
$4,893 AUD
View
A
Retailer 12
-
$4,935 AUD
View
Retailer 13
-
$5,405 AUD
View
Price last confirmed 18 days ago
A
Retailer 14
-
$5,453 AUD
View
A
Retailer 15
-
$5,717 AUD
View
B+
Retailer 16
-
$7,813 AUD
View
Most Expensive
NZ Jewellers
307087c8-3e1b-425a-be93-5a519e2e8e44 · Oct 17
$8,162 AUD
$5,608 USD
View
Price last confirmed 20 days ago
16 more retailers have this diamond
Prices start from $3,820 AUDSave up to $3,992 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.

A
1.51ct Princess
$3,820 AUD