CaratHunter
Plans
Princess|Natural|GIA

0.51ct D SI1 Princess Natural Diamond

GD • D/SI1 • GIA 3555417172

Certificate GIA 3555417172

Diamond specifications and retailer prices

From $727 AUD
As of November 4, 2026
Save $221 AUD (23%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $949 AUD at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 0.51ct natural princess diamond

This 0.51ct natural princess sits in the half to three-quarter carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 3555417172. Listed at 6 retailers as of November 4, 2026, with prices from $727 to $949, a $221 spread on the same certified stone. Blue Nile lists it at $949. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
D
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3555417172
Dimensions4.47 × 4.42 × 3.19 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
4.47 mm4.42 mm0.51 ctD / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 3555417172
Side View
Table 71.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 72.3%

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 4
Current: $949 AUD|Low: $660 AUD|High: $1,029 AUD|Avg: $824 AUD|-7.8%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 6$727 AUD
Retailer 4$743 AUD
Retailer 3$750 AUD
Retailer 5$813 AUD
Retailer 2$894 AUD
Blue Nile$949 AUD

42 data points across 6 retailers

6 retailers$727 AUD to $949 AUD

A
Cheapest Retailer
-
$727 AUD
B+
Retailer 2
-
$743 AUD
View
Final sale: no returns
A
Retailer 3
-
$750 AUD
View
B+
Retailer 4
-
$813 AUD
View
B+
Retailer 5
-
$894 AUD
View
Most Expensive
B+
Blue Nile
29297361 · Nov 5
$949 AUD
$664 USD
View
5 more retailers have this diamond
Prices start from $727 AUDSave up to $221 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
0.51ct Princess
$727 AUD