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Radiant|Natural|GIA

5.12ct F SI1 Radiant Natural Diamond

VG • F/SI1 • GIA 5241071918

Certificate GIA 5241071918

Diamond specifications and retailer prices

From £78,425 GBP
$105,242 USD
As of November 2, 2026
Save £8,737 GBP (10%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £87,162 GBP at William & Sons Jewelers · As of November 2, 2026
View at William & Sons Jewelers

About this 5.12ct natural radiant diamond

This 5.12ct natural radiant sits in the over five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 5241071918. Listed at 5 retailers as of November 2, 2026, with a relatively tight 11% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

5.12
Carat
F
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5241071918
Dimensions12.23 × 8.68 × 5.80 mm
L/W Ratio1.41
Top View
12.23 mm8.68 mm5.12 ctF / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5241071918
Side View
Table 67.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 66.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £80,851 GBP|Low: £78,410 GBP|High: £90,564 GBP|Avg: £84,751 GBP|-2.2%
Retailer 1
Retailer 2
Retailer 3
William & Sons Jewelers
November 1, 2026
Retailer 3£78,425 GBP
Retailer 1£80,851 GBP
Retailer 2£83,164 GBP
William & Sons Jewelers£87,162 GBP

17 data points across 4 retailers

5 retailers£78,425 GBP to £87,162 GBP

A
Cheapest Retailer
-
£78,425 GBP
$105,242 USD
A
Retailer 2
-
£80,851 GBP
₹10,333,119 INR
View
B+
Retailer 3
-
£83,164 GBP
$111,601 USD
View
B+
Retailer 4
-
£85,966 GBP
A$177,479 AUD
View
Most Expensive
B+
William & Sons Jewelers
cert_5241071918 · Nov 2
£87,162 GBP
$116,966 USD
View
Final sale: no returns
4 more retailers have this diamond
Prices start from £78,425 GBPSave up to £8,737 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
5.12ct Radiant
£78,425 GBP