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Princess|Natural|GIA

1.51ct I SI1 Princess Natural Diamond

EX • I/SI1 • GIA 6555315155

Certificate GIA 6555315155

Diamond specifications and retailer prices

From $4,650 AUD
As of November 6, 2026
Save $1,639 AUD (26%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $6,289 AUD at GemTrove · As of November 6, 2026
View at GemTrove

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 stated by the retailer rather than the lab and certified by GIA 6555315155. Listed at 8 retailers as of November 6, 2026, with prices from $4,650 to $6,289, a $1,639 spread on the same certified stone. GemTrove lists it at $6,289. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555315155
Dimensions6.38 × 6.26 × 4.52 mm
L/W Ratio1.02
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
6.38 mm6.26 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555315155
Side View
Table 71.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 72.1%

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: $4,650 AUD|Low: $4,141 AUD|High: $6,117 AUD|Avg: $5,108 AUD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 1$4,650 AUD
Retailer 3$4,714 AUD
Retailer 4$4,800 AUD
Retailer 7$4,877 AUD
Retailer 2$5,085 AUD
Retailer 6$5,533 AUD
Retailer 5$5,597 AUD

46 data points across 7 retailers

8 retailers$4,650 AUD to $6,289 AUD

A
Cheapest Retailer
-
$4,650 AUD
Retailer 2
-
$4,714 AUD
View
Price last confirmed 7 days ago
Retailer 3
-
$4,877 AUD
View
Price last confirmed 7 days ago
A
Retailer 4
-
$5,085 AUD
View
B+
Retailer 5
-
$5,533 AUD
View
Retailer 6
-
$5,597 AUD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$5,915 AUD
View
Most Expensive
B+
GemTrove
GT-N-01307688-98 · Nov 6
$6,289 AUD
View
7 more retailers have this diamond
Prices start from $4,650 AUDSave up to $1,639 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
$4,650 AUD