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Radiant|Natural|GIA

0.42ct F SI1 Radiant Natural Diamond

GD • F/SI1 • GIA 2556854085

Certificate GIA 2556854085

Diamond specifications and retailer prices

From £414 GBP
As of November 3, 2026
Save £167 GBP (29%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £1,000 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 0.42ct natural radiant diamond

This 0.42ct natural radiant sits in the sub-half-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2556854085. Listed at 8 retailers as of November 3, 2026, with a 40% 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

0.42
Carat
F
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2556854085
Dimensions3.82 × 5.05 × 2.59 mm
L/W Ratio1.32
Top View
3.82 mm5.05 mm0.42 ctF / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2556854085
Side View
Table 64.0%CrownGirdlePavilionCulet: NoneDepth 67.7%

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 3
Current: £1,000 GBP|Low: £414 GBP|High: £1,000 GBP|Avg: £622 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 4, 2026
Retailer 4£414 GBP
Retailer 3£523 GBP
Retailer 6£529 GBP
Retailer 7£539 GBP
Retailer 8£552 GBP
Retailer 2£581 GBP
Retailer 5£668 GBP
MOH London£1,000 GBP

8 data points across 8 retailers

8 retailers£414 GBP to £581 GBP

B+
Cheapest Retailer
-
£414 GBP
B
Retailer 2
-
£523 GBP
View
B
Retailer 3
-
£529 GBP
View
B
Retailer 4
-
£539 GBP
View
B
Retailer 5
-
£552 GBP
View
B
Retailer 6
-
£581 GBP
View
Retailer 7
-
£668 GBP
View
Price last confirmed 8 days ago
Most Expensive
MOH London
688E617F1 · Oct 29
£1,000 GBP
View
Price last confirmed 9 days ago
7 more retailers have this diamond
Prices start from £414 GBPSave up to £167 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+
0.42ct Radiant
£414 GBP