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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 £599 GBP
As of November 4, 2026
Save £365 GBP (38%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £1,262 GBP at MOH London · As of November 2, 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: £1,262 GBP|Low: £599 GBP|High: £1,277 GBP|Avg: £842 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 6£599 GBP
Retailer 8£638 GBP
Retailer 5£658 GBP
Retailer 3£805 GBP
Retailer 4£863 GBP
Retailer 7£932 GBP
Retailer 2£965 GBP
MOH London£1,262 GBP

41 data points across 8 retailers

8 retailers£599 GBP to £965 GBP

B+
Cheapest Retailer
-
£599 GBP
B
Retailer 2
-
£638 GBP
View
B
Retailer 3
-
£658 GBP
View
B
Retailer 4
-
£805 GBP
View
Retailer 5
-
£863 GBP
View
Price last confirmed 8 days ago
B
Retailer 6
-
£932 GBP
View
B
Retailer 7
-
£965 GBP
View
Most Expensive
MOH London
BD96662F6 · Nov 2
£1,262 GBP
View
Price under review
7 more retailers have this diamond
Prices start from £599 GBPSave up to £365 GBP

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
£599 GBP