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Radiant|Natural|GIA

0.51ct G SI1 Radiant Natural Diamond

GD • G/SI1 • GIA 5546045873

Certificate GIA 5546045873

Diamond specifications and retailer prices

From $667 AUD
As of November 6, 2026
Save $54 AUD (7%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $720 AUD 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
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Price History

Last verified: Nov 6
Current: $667 AUD|Low: $588 AUD|High: $1,179 AUD|Avg: $911 AUD|+8.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
ZCOVA
October 17, 2026
Retailer 1$667 AUD
ZCOVA$720 AUD
Retailer 2$736 AUD
Retailer 3$1,004 AUD
Retailer 4$1,004 AUD
Retailer 5$1,048 AUD
Retailer 6$1,179 AUD

6 data points across 7 retailers

2 retailers$667 AUD to $720 AUD

B+
Cheapest Retailer
-
$667 AUD
Final sale: no returns
Most Expensive
B+
ZCOVA
5546045873 · Nov 6
$720 AUD
MYR 2,015 MYR
View
1 more retailer has this diamond
Prices start from $667 AUDSave up to $54 AUD

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
$667 AUD