CaratHunter
Plans
Radiant|Natural|GIA

0.51ct F SI2 Radiant Natural Diamond

VG • F/SI2 • GIA 2175512626

Certificate GIA 2175512626

Diamond specifications and retailer prices

From £611 GBP
$820 USD
As of November 1, 2026
Save £641 GBP (51%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,143 GBP at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 0.51ct natural radiant diamond

This 0.51ct natural radiant sits in the half to three-quarter carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2175512626. Listed at 10 retailers as of November 1, 2026, with a 105% 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
F
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishGood
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2175512626
Dimensions4.84 × 4.37 × 2.87 mm
L/W Ratio1.11
Top View
4.84 mm4.37 mm0.51 ctF / SI2
OriginNatural
CutVery Good
PolishGood
SymmetryGood
FluorescenceFaint
CertificateGIA 2175512626
Side View
Table 78.0%CrownGirdle: ThickPavilionCulet: NoneDepth 65.7%

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 1
Current: £793 GBP|Low: £611 GBP|High: £1,267 GBP|Avg: £818 GBP|+5.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 5£611 GBP
Retailer 9£627 GBP
Retailer 4£691 GBP
Retailer 7£700 GBP
Retailer 8£782 GBP
Retailer 1£793 GBP
Retailer 3£856 GBP
Retailer 6£1,028 GBP
Retailer 2£1,252 GBP

36 data points across 9 retailers

10 retailers£611 GBP to £1,252 GBP

B+
Cheapest Retailer
-
£611 GBP
$820 USD
B
Retailer 2
-
£691 GBP
$927 USD
View
B
Retailer 3
-
£700 GBP
$940 USD
View
B
Retailer 4
-
£760 GBP
$1,020 USD
View
B
Retailer 5
-
£760 GBP
$1,020 USD
View
B
Retailer 6
-
£782 GBP
$1,050 USD
View
B
Retailer 7
-
£793 GBP
View
B
Retailer 8
-
£856 GBP
View
B
Retailer 9
-
£1,252 GBP
View
Most Expensive
NZ Jewellers
71d18f50-1a56-43fe-9206-c8821224c414 · Oct 17
£2,143 GBP
$2,876 USD
View
Price under review
9 more retailers have this diamond
Prices start from £611 GBPSave up to £641 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 Radiant
£611 GBP