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Princess|Natural|GIA

0.51ct I SI1 Princess Natural Diamond

GD • I/SI1

Diamond specifications and retailer prices

From £421 GBP
As of November 5, 2026
Save £126 GBP (23%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £547 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 I 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. Listed at 9 retailers as of November 5, 2026, with prices from £421 to £547, a £126 spread on the same certified stone. B2C Jewels lists it at £547. 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
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
Dimensions4.42 × 4.30 × 3.20 mm
L/W Ratio1.03
Top View
4.42 mm4.30 mm0.51 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA
Side View
Table 73.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 74.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £547 GBP|Low: £421 GBP|High: £1,459 GBP|Avg: £712 GBP
B2C Jewels
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 26, 2026
Retailer 2£421 GBP
Retailer 3£453 GBP
Retailer 8£453 GBP
Retailer 7£479 GBP
Retailer 5£486 GBP
B2C Jewels£547 GBP
Retailer 6£1,198 GBP
Retailer 4£1,459 GBP

12 data points across 8 retailers

9 retailers£421 GBP to £547 GBP

Retailer 1
-
£421 GBP
Price last confirmed 53 days ago
B
Retailer 2
-
£421 GBP
View
B
Retailer 3
-
£453 GBP
View
B
Retailer 4
-
£479 GBP
View
Retailer 5
-
£486 GBP
View
Price last confirmed 61 days ago
Most Expensive
C
B2C Jewels
35923281 · Nov 6
£547 GBP
$732 USD
View
5 more retailers have this diamond
Prices start from £421 GBPSave up to £126 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.

B
0.51ct Princess
£421 GBP