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Princess|Natural|GIA

0.51ct D SI2 Princess Natural Diamond

EX • D/SI2 • GIA 1559403364

Certificate GIA 1559403364

Diamond specifications and retailer prices

From £414 GBP
As of November 2, 2026
Save £386 GBP (48%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £1,328 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1559403364. Listed at 4 retailers as of November 1, 2026, with a 93% 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
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1559403364
Dimensions4.44 × 4.33 × 3.11 mm
L/W Ratio1.03
Culet sizeNone
Key to symbols
Crystal
Top View
4.44 mm4.33 mm0.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1559403364
Side View
Table 72.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 71.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £1,328 GBP|Low: £413 GBP|High: £1,336 GBP|Avg: £719 GBP|-0.1%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 3£414 GBP
Retailer 2£485 GBP
Retailer 5£489 GBP
Retailer 4£799 GBP
NZ Jewellers£1,328 GBP

35 data points across 5 retailers

4 retailers£414 GBP to £799 GBP

A
Cheapest Retailer
-
£414 GBP
B+
Retailer 2
-
£485 GBP
View
B
Retailer 3
-
£799 GBP
View
Most Expensive
NZ Jewellers
e3ece037-7135-4b87-a117-4712b4e62e07 · Nov 5
£1,328 GBP
$1,788 USD
View
Price under review
3 more retailers have this diamond
Prices start from £414 GBPSave up to £386 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
£414 GBP