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Princess|Natural|GIA

1.51ct F SI1 Princess Natural Diamond

EX • F/SI1 • GIA 6565155424

Certificate GIA 6565155424

Diamond specifications and retailer prices

From $5,871 AUD
As of November 6, 2026
Save $1,592 AUD (21%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $7,463 AUD at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 1.51ct natural princess diamond

This 1.51ct natural princess sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6565155424. Listed at 8 retailers as of November 5, 2026, with prices from $5,871 to $7,463, a $1,592 spread on the same certified stone. Blue Nile lists it at $7,463. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6565155424
Dimensions6.20 × 6.02 × 4.63 mm
L/W Ratio1.03
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
6.20 mm6.02 mm1.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6565155424
Side View
Table 70.0%CrownGirdle: ThickPavilionCulet: NoneDepth 76.9%

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: $7,463 AUD|Low: $5,450 AUD|High: $7,523 AUD|Avg: $6,548 AUD|-0.8%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 7, 2026
Retailer 4$5,871 AUD
Retailer 5$6,033 AUD
Retailer 3$6,274 AUD
Retailer 6$6,488 AUD
Retailer 2$6,609 AUD
Retailer 7$6,784 AUD
Blue Nile$7,463 AUD

46 data points across 7 retailers

8 retailers$5,871 AUD to $7,463 AUD

A
Cheapest Retailer
-
$5,871 AUD
A
Retailer 2
-
$6,033 AUD
View
A
Retailer 3
-
$6,274 AUD
View
A
Retailer 4
-
$6,488 AUD
View
Final sale: no returns
A
Retailer 5
-
$6,609 AUD
View
A
Retailer 6
-
$6,784 AUD
View
B+
Retailer 7
-
$7,418 AUD
View
Most Expensive
B+
Blue Nile
30112509 · Nov 5
$7,463 AUD
$5,128 USD
View
7 more retailers have this diamond
Prices start from $5,871 AUDSave up to $1,592 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
$5,871 AUD