CaratHunter
Plans
Round|Natural|GIA

0.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6342828860

Shape and cutting style on the report: Round brilliant

Certificate GIA 6342828860

Diamond specifications and retailer prices

From HK$5,956 HKD
As of November 6, 2026
Save HK$6,246 HKD (51%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$20,926 HKD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.51ct natural round diamond

This 0.51ct natural round sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6342828860. Listed at 13 retailers as of November 4, 2026, with a 105% 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
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6342828860
Dimensions5.18 × 5.16 × 3.15 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
5.18 mm5.16 mm0.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6342828860
Side View
Table 58.0%Crown 33.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 60.8%

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: HK$20,926 HKD|Low: HK$5,133 HKD|High: HK$20,926 HKD|Avg: HK$9,256 HKD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 6HK$6,160 HKD
Retailer 4HK$6,427 HKD
Retailer 9HK$6,670 HKD
Retailer 7HK$6,928 HKD
Retailer 10HK$7,304 HKD
Retailer 8HK$7,696 HKD
Retailer 2HK$7,916 HKD
Retailer 3HK$9,334 HKD
Retailer 5HK$12,203 HKD
NZ JewellersHK$20,926 HKD

42 data points across 10 retailers

13 retailersHK$5,956 HKD to HK$12,203 HKD

B+
Cheapest Retailer
-
HK$5,956 HKD
B+
Retailer 2
-
HK$6,160 HKD
View
Final sale: no returns
B+
Retailer 3
-
HK$6,427 HKD
View
Retailer 4
-
HK$6,670 HKD
View
Price last confirmed 53 days ago
Retailer 5
-
HK$6,670 HKD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
HK$6,756 HKD
View
B+
Retailer 7
-
HK$6,928 HKD
View
Retailer 8
-
HK$7,696 HKD
View
Price last confirmed 10 days ago
B+
Retailer 9
-
HK$7,712 HKD
View
B
Retailer 10
-
HK$7,916 HKD
View
B
Retailer 11
-
HK$9,334 HKD
View
B
Retailer 12
-
HK$12,203 HKD
View
Most Expensive
NZ Jewellers
b884ea88-7e54-40de-8759-5eb9071228ad · Oct 30
HK$20,926 HKD
$2,670 USD
View
Price under review
12 more retailers have this diamond
Prices start from HK$5,956 HKDSave up to HK$6,246 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.

B+
0.51ct Round
HK$5,956 HKD