Radiant|Natural|GIA

0.51ct F SI1 Radiant Natural Diamond

EX • F/SI1 • GIA 6542238999

Certificate GIA 6542238999

Diamond specifications and retailer prices

From HK$5,330 HKD
SGD 918 SGD
As of October 27, 2026
Save HK$2,159 HKD (29%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$16,077 HKD 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: HK$16,077 HKD|Low: HK$4,849 HKD|High: HK$16,077 HKD|Avg: HK$7,192 HKD
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 8HK$4,849 HKD
Retailer 13HK$5,124 HKD
Retailer 15HK$5,124 HKD
Retailer 16HK$5,328 HKD
Retailer 7HK$5,330 HKD
Retailer 14HK$5,916 HKD
Retailer 5HK$6,089 HKD
Retailer 6HK$6,163 HKD
Retailer 9HK$6,280 HKD
Retailer 2HK$6,314 HKD
Retailer 3HK$6,591 HKD
Retailer 10HK$7,489 HKD
Retailer 4HK$7,710 HKD
Retailer 11HK$7,895 HKD
Retailer 12HK$11,858 HKD
NZ JewellersHK$16,077 HKD

37 data points across 16 retailers

16 retailersHK$5,330 HKD to HK$7,489 HKD

Retailer 1
-
HK$4,849 HKD
$618 USD
Price last confirmed 8 days ago
Retailer 2
-
HK$5,124 HKD
$653 USD
View
Price last confirmed 7 days ago
Retailer 3
-
HK$5,124 HKD
$653 USD
View
Price last confirmed 8 days ago
Retailer 4
-
HK$5,328 HKD
$679 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
HK$5,330 HKD
SGD 918 SGD
View
Retailer 6
-
HK$5,916 HKD
$754 USD
View
Price last confirmed 10 days ago
Retailer 7
-
HK$6,089 HKD
$776 USD
View
Price last confirmed 7 days ago
Retailer 8
-
HK$6,163 HKD
$785 USD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
HK$6,280 HKD
£630 GBP
View
B+
Retailer 10
-
HK$6,314 HKD
£634 GBP
View
Retailer 11
-
HK$6,591 HKD
$840 USD
View
Price last confirmed 5 days ago
B+
Retailer 12
-
HK$7,489 HKD
€909 EUR
View
Retailer 13
-
HK$7,710 HKD
A$1,512 AUD
View
Price last confirmed 29 days ago
Retailer 14
-
HK$7,895 HKD
ZAR 16,255 ZAR
View
Price last confirmed 7 days ago
Retailer 15
-
HK$11,858 HKD
£1,190 GBP
View
Price last confirmed 7 days ago
Most Expensive
NZ Jewellers
b7f5f9fc-64ef-45e7-8d38-debddd2aca39 · Oct 24
HK$16,077 HKD
$2,049 USD
View
Price last confirmed 9 days ago
15 more retailers have this diamond
Prices start from HK$5,330 HKDSave up to HK$2,159 HKD

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
HK$5,330 HKD