Princess|Natural|GIA

0.51ct I SI1 Princess Natural Diamond

ID • I/SI1 • GIA 1328318877

Certificate GIA 1328318877

Diamond specifications and retailer prices

From €401 EUR
As of November 6, 2026
Save €339 EUR (46%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €1,109 EUR at MOH London · As of November 1, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1328318877. Listed at 17 retailers as of November 4, 2026, with a 85% 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
I
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1328318877
Dimensions4.52 × 4.31 × 3.15 mm
L/W Ratio1.05
Key to symbols
Crystal, Feather
Top View
4.52 mm4.31 mm0.51 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1328318877
Side View
Table 74.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 73.1%

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 6
Current: €1,109 EUR|Low: €401 EUR|High: €1,507 EUR|Avg: €627 EUR|-0.6%
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
Retailer 18
November 6, 2026
Retailer 9€401 EUR
Retailer 7€428 EUR
Retailer 8€430 EUR
Retailer 4€442 EUR
Retailer 18€480 EUR
Retailer 11€501 EUR
Retailer 15€518 EUR
Retailer 16€518 EUR
Retailer 10€534 EUR
Retailer 3€554 EUR
Retailer 2€586 EUR
Retailer 13€597 EUR
Retailer 5€606 EUR
Retailer 6€658 EUR
Retailer 12€711 EUR
Retailer 14€741 EUR
MOH London€1,109 EUR
Retailer 17€1,507 EUR

30 data points across 18 retailers

17 retailers€401 EUR to €741 EUR

A
Cheapest Retailer
-
€401 EUR
A
Retailer 2
-
€430 EUR
View
B+
Retailer 3
-
€442 EUR
View
Final sale: no returns
B+
Retailer 4
-
€480 EUR
View
B+
Retailer 5
-
€501 EUR
View
Retailer 6
-
€518 EUR
View
Price last confirmed 8 days ago
B+
Retailer 7
-
€518 EUR
View
B
Retailer 8
-
€554 EUR
View
B+
Retailer 9
-
€586 EUR
View
B
Retailer 10
-
€597 EUR
View
B
Retailer 11
-
€597 EUR
View
B
Retailer 12
-
€606 EUR
View
B
Retailer 13
-
€658 EUR
View
B
Retailer 14
-
€711 EUR
View
B
Retailer 15
-
€741 EUR
View
Most Expensive
MOH London
A33FE9304 · Nov 1
€1,109 EUR
£975 GBP
View
Price under review
15 more retailers have this diamond
Prices start from €401 EURSave up to €339 EUR

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
€401 EUR