CaratHunter
Plans
Princess|Natural|GIA

0.51ct F SI1 Princess Natural Diamond

EX • F/SI1 • GIA 2171192244

Certificate GIA 2171192244

Diamond specifications and retailer prices

From £595 GBP
As of November 6, 2026
Save £112 GBP (16%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £1,116 GBP at MOH London · As of November 4, 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2171192244. Listed at 4 retailers as of November 6, 2026, with a relatively tight 19% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2171192244
Dimensions4.43 × 4.43 × 3.14 mm
L/W Ratio1.00
Culet sizeNone
Top View
4.43 mm4.43 mm0.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2171192244
Side View
Table 70.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 70.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £1,116 GBP|Low: £564 GBP|High: £1,131 GBP|Avg: £759 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 3£595 GBP
Retailer 4£606 GBP
Retailer 2£708 GBP
MOH London£1,116 GBP

43 data points across 4 retailers

4 retailers£595 GBP to £708 GBP

B+
Cheapest Retailer
-
£595 GBP
B+
Retailer 2
-
£606 GBP
View
B
Retailer 3
-
£708 GBP
View
Most Expensive
MOH London
97BCD85DC · Nov 4
£1,116 GBP
View
Price under review
3 more retailers have this diamond
Prices start from £595 GBPSave up to £112 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
£595 GBP