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Princess|Natural|GIA

0.51ct F SI1 Princess Natural Diamond

ID • F/SI1 • GIA 2518222850

Certificate GIA 2518222850

Diamond specifications and retailer prices

From $1,447 NZD
As of November 4, 2026
Save $882 NZD (38%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $3,031 NZD at MOH London · As of November 7, 2026
View at MOH London

About this 0.51ct natural princess diamond

This 0.51ct natural princess sits in the half to three-quarter carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2518222850. Listed at 8 retailers as of November 4, 2026, with a 61% 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

0.51
Carat
F
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2518222850
Dimensions4.50 × 4.41 × 3.14 mm
L/W Ratio1.02
Top View
4.50 mm4.41 mm0.51 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2518222850
Side View
Table 71.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 71.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $3,031 NZD|Low: $1,447 NZD|High: $3,084 NZD|Avg: $2,079 NZD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 7, 2026
Retailer 6$1,447 NZD
Retailer 5$1,589 NZD
Retailer 2$1,945 NZD
Retailer 4$2,084 NZD
Retailer 3$2,329 NZD
MOH London$3,031 NZD

42 data points across 6 retailers

8 retailers$1,447 NZD to $2,329 NZD

B+
Cheapest Retailer
-
$1,447 NZD
B
Retailer 2
-
$1,541 NZD
View
B
Retailer 3
-
$1,589 NZD
View
B
Retailer 4
-
$1,945 NZD
View
Retailer 5
-
$2,084 NZD
View
Price last confirmed 8 days ago
B
Retailer 6
-
$2,249 NZD
View
B
Retailer 7
-
$2,329 NZD
View
Most Expensive
MOH London
BD96662F6 · Nov 7
$3,031 NZD
£1,323 GBP
View
Price under review
7 more retailers have this diamond
Prices start from $1,447 NZDSave up to $882 NZD

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.

B+
0.51ct Princess
$1,447 NZD