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Princess|Natural|GIA

1.51ct I SI1 Princess Natural Diamond

EX • I/SI1 • GIA 2554786900

Certificate GIA 2554786900

Diamond specifications and retailer prices

From $4,617 AUD
As of November 6, 2026
Save $1,673 AUD (27%) 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 2554786900. Listed at 8 retailers as of November 6, 2026, with prices from $4,617 to $6,289, a $1,673 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 2554786900
Dimensions6.07 × 6.06 × 4.53 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle, Natural
Top View
6.07 mm6.06 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2554786900
Side View
Table 71.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 74.7%

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: $4,617 AUD|Low: $4,617 AUD|High: $6,210 AUD|Avg: $5,173 AUD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 1$4,617 AUD
Retailer 3$4,665 AUD
Retailer 4$4,883 AUD
Retailer 6$5,190 AUD
Retailer 2$5,266 AUD
Retailer 5$5,787 AUD

46 data points across 6 retailers

8 retailers$4,617 AUD to $6,289 AUD

A
Cheapest Retailer
-
$4,617 AUD
Retailer 2
-
$4,665 AUD
View
Price last confirmed 16 days ago
Retailer 3
-
$4,883 AUD
View
Price last confirmed 7 days ago
A
Retailer 4
-
$5,190 AUD
View
A
Retailer 5
-
$5,266 AUD
View
Retailer 6
-
$5,787 AUD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$5,871 AUD
View
Most Expensive
B+
GemTrove
GT-N-01307713-98 · Nov 6
$6,289 AUD
View
7 more retailers have this diamond
Prices start from $4,617 AUDSave up to $1,673 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
$4,617 AUD