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Radiant|Natural|GIA

0.51ct F SI1 Radiant Natural Diamond

EX • F/SI1 • GIA 6542238999

Certificate GIA 6542238999

Diamond specifications and retailer prices

From $969 AUD
SGD 918 SGD
As of October 27, 2026
Save $393 AUD (29%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,924 AUD at NZ Jewellers · As of October 24, 2026
View at NZ Jewellers

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6542238999. Listed at 16 retailers as of October 27, 2026, with a 41% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

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

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6542238999
Dimensions5.41 × 4.27 × 2.76 mm
L/W Ratio1.27
Top View
5.41 mm4.27 mm0.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6542238999
Side View
Table 64.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 64.5%

Caratlytics Score

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

Price History

Last verified: Oct 27
Current: $2,924 AUD|Low: $882 AUD|High: $2,924 AUD|Avg: $1,308 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 27, 2026
Retailer 8$882 AUD
Retailer 13$932 AUD
Retailer 15$932 AUD
Retailer 16$969 AUD
Retailer 7$969 AUD
Retailer 14$1,076 AUD
Retailer 5$1,107 AUD
Retailer 6$1,121 AUD
Retailer 9$1,142 AUD
Retailer 2$1,148 AUD
Retailer 3$1,199 AUD
Retailer 10$1,362 AUD
Retailer 4$1,402 AUD
Retailer 11$1,436 AUD
Retailer 12$2,156 AUD
NZ Jewellers$2,924 AUD

37 data points across 16 retailers

16 retailers$969 AUD to $1,362 AUD

Retailer 1
-
$882 AUD
$618 USD
Price last confirmed 8 days ago
Retailer 2
-
$932 AUD
$653 USD
View
Price last confirmed 7 days ago
Retailer 3
-
$932 AUD
$653 USD
View
Price last confirmed 8 days ago
Retailer 4
-
$969 AUD
$679 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$969 AUD
SGD 918 SGD
View
Retailer 6
-
$1,076 AUD
$754 USD
View
Price last confirmed 10 days ago
Retailer 7
-
$1,107 AUD
$776 USD
View
Price last confirmed 7 days ago
Retailer 8
-
$1,121 AUD
$785 USD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$1,142 AUD
£630 GBP
View
B+
Retailer 10
-
$1,148 AUD
£634 GBP
View
Retailer 11
-
$1,199 AUD
$840 USD
View
Price last confirmed 5 days ago
B+
Retailer 12
-
$1,362 AUD
€909 EUR
View
Retailer 13
-
$1,402 AUD
View
Price last confirmed 29 days ago
Retailer 14
-
$1,436 AUD
ZAR 16,255 ZAR
View
Price last confirmed 7 days ago
Retailer 15
-
$2,156 AUD
£1,190 GBP
View
Price last confirmed 7 days ago
Most Expensive
NZ Jewellers
b7f5f9fc-64ef-45e7-8d38-debddd2aca39 · Oct 24
$2,924 AUD
$2,049 USD
View
Price last confirmed 9 days ago
15 more retailers have this diamond
Prices start from $969 AUDSave up to $393 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.

A
0.51ct Radiant
$969 AUD