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Princess|Natural|GIA

1.51ct D SI2 Princess Natural Diamond

EX • D/SI2 • GIA 6551102755

Certificate GIA 6551102755

Diamond specifications and retailer prices

From $4,351 AUD
As of November 6, 2026
Save $5,483 AUD (56%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $11,865 AUD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.51ct natural princess diamond

This 1.51ct natural princess sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551102755. Listed at 17 retailers as of November 2, 2026, with a 126% 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
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551102755
Dimensions6.17 × 6.12 × 4.41 mm
L/W Ratio1.01
Top View
6.17 mm6.12 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551102755
Side View
Table 71.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 72.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $11,865 AUD|Low: $4,351 AUD|High: $11,910 AUD|Avg: $7,207 AUD|+2.7%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 7$4,351 AUD
Retailer 2$4,634 AUD
Retailer 9$5,263 AUD
Retailer 3$5,483 AUD
Retailer 6$5,494 AUD
Retailer 5$5,775 AUD
Retailer 8$5,913 AUD
Retailer 4$6,417 AUD
Retailer 10$9,834 AUD
Queensmith$11,865 AUD

32 data points across 10 retailers

17 retailers$4,351 AUD to $9,834 AUD

A
Cheapest Retailer
-
$4,351 AUD
A
Retailer 2
-
$4,634 AUD
View
A
Retailer 3
-
$5,263 AUD
View
Final sale: no returns
A
Retailer 4
-
$5,483 AUD
View
A
Retailer 5
-
$5,494 AUD
View
A
Retailer 6
-
$5,681 AUD
View
A
Retailer 7
-
$5,775 AUD
View
A
Retailer 8
-
$5,913 AUD
View
A
Retailer 9
-
$6,033 AUD
View
Retailer 10
-
$6,238 AUD
View
Price last confirmed 29 days ago
Retailer 11
-
$6,238 AUD
View
Price last confirmed 29 days ago
Retailer 12
-
$6,238 AUD
View
Price last confirmed 38 days ago
A
Retailer 13
-
$6,417 AUD
View
Retailer 14
-
$7,197 AUD
View
Price last confirmed 28 days ago
B+
Retailer 15
-
$9,834 AUD
View
Retailer 16
-
$10,867 AUD
View
Price last confirmed 37 days ago
Most Expensive
Queensmith
6551102755 · Oct 28
$11,865 AUD
£6,540 GBP
View
Price last confirmed 8 days ago
16 more retailers have this diamond
Prices start from $4,351 AUDSave up to $5,483 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
$4,351 AUD