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Princess|Natural|IGI

0.51ct G SI2 Princess Natural Diamond

VG • G/SI2 • IGI 811673434

Shape and cutting style on the report: Princess cut

Certificate IGI 811673434

Diamond specifications and retailer prices

From £241 GBP
As of November 6, 2026
Save £191 GBP (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £432 GBP at B2C Jewels · As of November 6, 2026
View at B2C Jewels

About this 0.51ct natural princess diamond

This 0.51ct natural princess sits in the half to three-quarter carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 811673434. Listed at 14 retailers as of November 6, 2026, with prices from £241 to £432, a £191 spread on the same certified stone. B2C Jewels lists it at £432. 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
G
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle54.5°
Pavilion angle42.7°
OriginNatural
Grading LabIGI
CertificateIGI 811673434
Dimensions4.20 × 4.12 × 3.37 mm
L/W Ratio1.02
Top View
4.20 mm4.12 mm0.51 ctG / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 811673434
Side View
Table 74.0%Crown 54.5°Girdle: MED-VTKPavilion 42.7°Culet: NoneDepth 81.8%

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: £432 GBP|Low: £241 GBP|High: £1,268 GBP|Avg: £406 GBP
B2C Jewels
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 2£241 GBP
Retailer 11£305 GBP
Retailer 6£331 GBP
Retailer 5£357 GBP
Retailer 3£364 GBP
Retailer 7£382 GBP
Retailer 4£393 GBP
Retailer 9£415 GBP
B2C Jewels£432 GBP
Retailer 10£531 GBP
Retailer 8£1,268 GBP

44 data points across 11 retailers

14 retailers£241 GBP to £432 GBP

A
Cheapest Retailer
-
£241 GBP
B+
Retailer 2
-
£305 GBP
View
Final sale: no returns
B+
Retailer 3
-
£331 GBP
View
Retailer 4
-
£331 GBP
View
Price last confirmed 8 days ago
Retailer 5
-
£357 GBP
View
Price last confirmed 8 days ago
B+
Retailer 6
-
£357 GBP
View
B+
Retailer 7
-
£382 GBP
View
Retailer 8
-
£382 GBP
View
Price last confirmed 10 days ago
B+
Retailer 9
-
£393 GBP
View
B+
Retailer 10
-
£415 GBP
View
B
Retailer 11
-
£428 GBP
View
Most Expensive
B
B2C Jewels
35668782 · Nov 6
£432 GBP
$581 USD
View
11 more retailers have this diamond
Prices start from £241 GBPSave up to £191 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
£241 GBP