CaratHunter
Plans
Radiant|Natural|GIA

0.51ct G SI1 Radiant Natural Diamond

GD • G/SI1 • GIA 5546045873

Certificate GIA 5546045873

Diamond specifications and retailer prices

From £342 GBP
As of November 6, 2026
Save £27 GBP (7%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £370 GBP at ZCOVA · As of November 6, 2026
View at ZCOVA

About this 0.51ct natural radiant diamond

This 0.51ct natural radiant sits in the half to three-quarter carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5546045873. Listed at 2 retailers as of November 6, 2026, with a relatively tight 8% 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
G
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5546045873
Dimensions5.71 × 3.89 × 2.64 mm
L/W Ratio1.47
Top View
5.71 mm3.89 mm0.51 ctG / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5546045873
Side View
Table 67.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 67.8%

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: £342 GBP|Low: £302 GBP|High: £605 GBP|Avg: £468 GBP|+8.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
ZCOVA
October 17, 2026
Retailer 1£342 GBP
ZCOVA£370 GBP
Retailer 2£378 GBP
Retailer 3£516 GBP
Retailer 4£516 GBP
Retailer 5£538 GBP
Retailer 6£605 GBP

6 data points across 7 retailers

2 retailers£342 GBP to £370 GBP

B+
Cheapest Retailer
-
£342 GBP
Final sale: no returns
Most Expensive
B+
ZCOVA
5546045873 · Nov 6
£370 GBP
MYR 2,015 MYR
View
1 more retailer has this diamond
Prices start from £342 GBPSave up to £27 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
£342 GBP