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Princess|Natural|GIA

0.51ct D SI1 Princess Natural Diamond

GD • D/SI1 • GIA 7518159445

Certificate GIA 7518159445

Diamond specifications and retailer prices

From £355 GBP
As of November 4, 2026
Save £120 GBP (25%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £475 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 D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 7518159445. Listed at 6 retailers as of November 4, 2026, with prices from £355 to £475, a £120 spread on the same certified stone. 77 Diamonds lists it at £475. 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
D
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7518159445
Dimensions4.36 × 4.33 × 3.14 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather
Top View
4.36 mm4.33 mm0.51 ctD / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7518159445
Side View
Table 69.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 72.6%

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: £475 GBP|Low: £318 GBP|High: £609 GBP|Avg: £479 GBP|-7.2%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 3£355 GBP
Retailer 2£362 GBP
Retailer 5£383 GBP
Retailer 4£429 GBP
Retailer 7£447 GBP
77 Diamonds£475 GBP
Retailer 6£587 GBP
Retailer 8£609 GBP
Retailer 9£609 GBP

42 data points across 9 retailers

6 retailers£355 GBP to £475 GBP

A
Cheapest Retailer
-
£355 GBP
Final sale: no returns
A
Retailer 2
-
£362 GBP
View
A
Retailer 3
-
£383 GBP
View
B+
Retailer 4
-
£429 GBP
View
Retailer 5
-
£447 GBP
View
Price last confirmed 82 days ago
Most Expensive
B+
77 Diamonds
PRICPTNWK6DVQ · Nov 6
£475 GBP
View
5 more retailers have this diamond
Prices start from £355 GBPSave up to £120 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
£355 GBP