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Radiant|Natural|GIA

0.51ct F SI1 Radiant Natural Diamond

GD • F/SI1 • GIA 2546189147

Certificate GIA 2546189147

Diamond specifications and retailer prices

From £332 GBP
$445 USD
As of November 2, 2026
Save £29 GBP (8%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £361 GBP at Michael Trio · As of November 2, 2026
View at Michael Trio

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 SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2546189147. Listed at 2 retailers as of November 2, 2026, with a relatively tight 9% 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

0.51
Carat
F
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2546189147
Dimensions5.29 × 4.08 × 2.67 mm
L/W Ratio1.30
Top View
5.29 mm4.08 mm0.51 ctF / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2546189147
Side View
Table 64.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 65.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 2
Current: £361 GBP|Low: £294 GBP|High: £591 GBP|Avg: £428 GBP|-6.3%
Michael Trio
Retailer 2
Retailer 3
October 17, 2026
Retailer 2£332 GBP
Michael Trio£361 GBP
Retailer 3£591 GBP

5 data points across 3 retailers

2 retailers£332 GBP to £361 GBP

B+
Cheapest Retailer
-
£332 GBP
$445 USD
Final sale: no returns
Most Expensive
B+
Michael Trio
3564387130 · Nov 2
£361 GBP
SGD 654 SGD
View
1 more retailer has this diamond
Prices start from £332 GBPSave up to £29 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
£332 GBP