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Princess|Natural|GIA

1.51ct K SI1 Princess Natural Diamond

ID • K/SI1 • GIA 6541288643

Certificate GIA 6541288643

Diamond specifications and retailer prices

From $4,774 AUD
As of November 5, 2026
Save $3,506 AUD (42%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $8,649 AUD at NZ Jewellers · As of September 30, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6541288643. Listed at 10 retailers as of November 4, 2026, with a 73% 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
K
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6541288643
Dimensions6.16 × 6.09 × 4.47 mm
L/W Ratio1.01
Top View
6.16 mm6.09 mm1.51 ctK / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6541288643
Side View
Table 71.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 73.5%

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 5
Current: $5,779 AUD|Low: $4,774 AUD|High: $8,402 AUD|Avg: $6,026 AUD|+1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 5$4,774 AUD
Retailer 2$5,136 AUD
Retailer 1$5,779 AUD
Retailer 3$6,059 AUD
Retailer 4$8,280 AUD

45 data points across 5 retailers

10 retailers$4,774 AUD to $8,280 AUD

A
Cheapest Retailer
-
$4,774 AUD
Retailer 2
-
$4,964 AUD
View
Price last confirmed 29 days ago
Retailer 3
-
$4,964 AUD
View
Price last confirmed 29 days ago
B+
Retailer 4
-
$5,136 AUD
View
Retailer 5
-
$5,155 AUD
View
Price last confirmed 38 days ago
Retailer 6
-
$5,728 AUD
View
Price last confirmed 38 days ago
B+
Retailer 7
-
$5,779 AUD
View
B
Retailer 8
-
$6,059 AUD
View
B
Retailer 9
-
$8,280 AUD
View
Most Expensive
NZ Jewellers
de7eb8e7-113a-4d8f-8219-4a1c30751ab7 · Sep 30
$8,649 AUD
$5,943 USD
View
Price last confirmed 37 days ago
9 more retailers have this diamond
Prices start from $4,774 AUDSave up to $3,506 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
$4,774 AUD