Princess|Natural|GIA

0.51ct H SI1 Princess Natural Diamond

GD • H/SI1 • GIA 2566272905

Certificate GIA 2566272905

Diamond specifications and retailer prices

From $342 USD
As of November 4, 2026
Save $420 USD (55%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,135 USD 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
Color
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: $1,135 USD|Low: $342 USD|High: $1,884 USD|Avg: $719 USD
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$342 USD
Retailer 2$363 USD
Retailer 6$600 USD
Retailer 8$608 USD
Retailer 11$616 USD
Retailer 12$622 USD
Retailer 3$636 USD
Retailer 5$691 USD
Retailer 13$695 USD
Retailer 7$735 USD
Retailer 9$762 USD
MOH London$1,135 USD
Retailer 10$1,884 USD

7 data points across 13 retailers

15 retailers$342 USD to $762 USD

A
Cheapest Retailer
-
$342 USD
Final sale: no returns
A
Retailer 2
-
$363 USD
View
B+
Retailer 3
-
$450 USD
View
B+
Retailer 4
-
$500 USD
View
B
Retailer 5
-
$600 USD
View
B
Retailer 6
-
$608 USD
View
B
Retailer 7
-
$616 USD
View
B
Retailer 8
-
$622 USD
View
B
Retailer 9
-
$636 USD
View
B
Retailer 10
-
$691 USD
View
B
Retailer 11
-
$695 USD
View
B
Retailer 12
-
$735 USD
View
B
Retailer 13
-
$762 USD
View
Most Expensive
MOH London
65D48ADDD · Nov 2
$1,135 USD
£894 GBP
View
Price under review
13 more retailers have this diamond
Prices start from $342 USDSave up to $420 USD

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
$342 USD