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Princess|Natural|GIA

0.51ct H SI1 Princess Natural Diamond

GD • H/SI1 • GIA 5563270645

Certificate GIA 5563270645

Diamond specifications and retailer prices

From £343 GBP
As of November 4, 2026
Save £83 GBP (20%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £426 GBP at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

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 5563270645. Listed at 4 retailers as of November 4, 2026, with prices from £343 to £426, a £83 spread on the same certified stone. 77 Diamonds lists it at £426. 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
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5563270645
Dimensions4.41 × 4.25 × 3.17 mm
L/W Ratio1.04
Culet sizeNone
Key to symbols
Crystal
Top View
4.41 mm4.25 mm0.51 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 5563270645
Side View
Table 72.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 74.7%

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: £426 GBP|Low: £293 GBP|High: £430 GBP|Avg: £369 GBP|+2.0%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 4£343 GBP
Retailer 2£353 GBP
Retailer 3£371 GBP
77 Diamonds£426 GBP

41 data points across 4 retailers

4 retailers£343 GBP to £426 GBP

B+
Cheapest Retailer
-
£343 GBP
Final sale: no returns
Retailer 2
-
£353 GBP
View
Price last confirmed 19 days ago
B+
Retailer 3
-
£371 GBP
View
Most Expensive
B
77 Diamonds
PRICPTDABNAAR · Nov 6
£426 GBP
View
3 more retailers have this diamond
Prices start from £343 GBPSave up to £83 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
£343 GBP