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Princess|Natural|GIA

0.51ct H SI1 Princess Natural Diamond

GD • H/SI1 • GIA 2566272905

Certificate GIA 2566272905

Diamond specifications and retailer prices

From £254 GBP
As of November 4, 2026
Save £312 GBP (55%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £844 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2566272905. Listed at 15 retailers as of November 4, 2026, with a 123% 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
H
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2566272905
Dimensions4.27 × 4.26 × 3.16 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Crystal, Cloud
Top View
4.27 mm4.26 mm0.51 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566272905
Side View
Table 71.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 74.1%

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: £844 GBP|Low: £254 GBP|High: £1,400 GBP|Avg: £534 GBP
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
November 6, 2026
Retailer 4£254 GBP
Retailer 2£270 GBP
Retailer 6£446 GBP
Retailer 8£452 GBP
Retailer 11£458 GBP
Retailer 12£462 GBP
Retailer 3£473 GBP
Retailer 5£513 GBP
Retailer 13£516 GBP
Retailer 7£546 GBP
Retailer 9£566 GBP
MOH London£844 GBP
Retailer 10£1,400 GBP

7 data points across 13 retailers

15 retailers£254 GBP to £566 GBP

A
Cheapest Retailer
-
£254 GBP
Final sale: no returns
A
Retailer 2
-
£270 GBP
View
B+
Retailer 3
-
£334 GBP
View
B+
Retailer 4
-
£371 GBP
View
B
Retailer 5
-
£446 GBP
View
B
Retailer 6
-
£452 GBP
View
B
Retailer 7
-
£458 GBP
View
B
Retailer 8
-
£462 GBP
View
B
Retailer 9
-
£473 GBP
View
B
Retailer 10
-
£513 GBP
View
B
Retailer 11
-
£516 GBP
View
B
Retailer 12
-
£546 GBP
View
B
Retailer 13
-
£566 GBP
View
Most Expensive
MOH London
65D48ADDD · Nov 2
£844 GBP
View
Price under review
13 more retailers have this diamond
Prices start from £254 GBPSave up to £312 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.

A
0.51ct Princess
£254 GBP