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Princess|Natural|GIA

0.51ct F SI1 Princess Natural Diamond

VG • F/SI1 • GIA 5406401306

Certificate GIA 5406401306

Diamond specifications and retailer prices

From £421 GBP
As of November 6, 2026
Save £349 GBP (45%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,150 GBP at MOH London · As of November 4, 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 5406401306. Listed at 17 retailers as of November 4, 2026, with a 83% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
F
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5406401306
Dimensions4.31 × 4.27 × 3.26 mm
L/W Ratio1.01
Top View
4.31 mm4.27 mm0.51 ctF / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5406401306
Side View
Table 75.0%CrownGirdle: ThickPavilionCulet: NoneDepth 76.4%

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 6
Current: £1,150 GBP|Low: £421 GBP|High: £1,564 GBP|Avg: £668 GBP|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 6, 2026
Retailer 9£421 GBP
Retailer 8£439 GBP
Retailer 5£460 GBP
Retailer 3£498 GBP
Retailer 15£498 GBP
Retailer 10£517 GBP
Retailer 16£518 GBP
Retailer 4£575 GBP
Retailer 6£589 GBP
Retailer 2£608 GBP
Retailer 12£608 GBP
Retailer 14£625 GBP
Retailer 7£635 GBP
Retailer 11£707 GBP
Retailer 13£770 GBP
MOH London£1,150 GBP
Retailer 17£1,564 GBP

30 data points across 17 retailers

17 retailers£421 GBP to £770 GBP

B+
Cheapest Retailer
-
£421 GBP
B+
Retailer 2
-
£460 GBP
View
Final sale: no returns
Retailer 3
-
£498 GBP
View
Price last confirmed 9 days ago
B
Retailer 4
-
£498 GBP
View
B
Retailer 5
-
£517 GBP
View
B
Retailer 6
-
£518 GBP
View
B
Retailer 7
-
£575 GBP
View
B
Retailer 8
-
£589 GBP
View
B
Retailer 9
-
£597 GBP
View
B
Retailer 10
-
£608 GBP
View
B
Retailer 11
-
£608 GBP
View
B
Retailer 12
-
£625 GBP
View
B
Retailer 13
-
£635 GBP
View
B
Retailer 14
-
£707 GBP
View
B
Retailer 15
-
£770 GBP
View
Most Expensive
MOH London
430980318 · Nov 4
£1,150 GBP
View
Price under review
15 more retailers have this diamond
Prices start from £421 GBPSave up to £349 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
£421 GBP