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Round|Natural|GIA

0.51ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 2397005218

Certificate GIA 2397005218

Diamond specifications and retailer prices

From HK$2,612 HKD
As of November 5, 2026
Save HK$7,406 HKD (74%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$10,018 HKD at NZ Jewellers · As of November 4, 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2397005218. Listed at 11 retailers as of November 4, 2026, with prices from HK$2,612 to HK$10,018, a HK$7,406 spread on the same certified stone. NZ Jewellers lists it at HK$10,018. 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
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2397005218
Dimensions5.09 × 5.05 × 3.20 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
5.09 mm5.05 mm0.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2397005218
Side View
Table 56.0%Crown 36.5°Girdle: Sli. ThickPavilion 41°Culet: NoneDepth 63.3%

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: Nov 5
Current: HK$10,018 HKD|Low: HK$2,612 HKD|High: HK$10,207 HKD|Avg: HK$4,271 HKD|-1.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 11HK$2,612 HKD
Retailer 8HK$2,816 HKD
Retailer 3HK$2,863 HKD
Retailer 9HK$2,911 HKD
Retailer 7HK$3,122 HKD
Retailer 2HK$3,319 HKD
Retailer 10HK$3,515 HKD
Retailer 4HK$3,758 HKD
Retailer 12HK$4,181 HKD
Retailer 5HK$4,833 HKD
Retailer 6HK$6,025 HKD
NZ JewellersHK$10,018 HKD

44 data points across 12 retailers

11 retailersHK$2,612 HKD to HK$10,018 HKD

A
Cheapest Retailer
-
HK$2,612 HKD
Retailer 2
-
HK$2,816 HKD
View
Price last confirmed 8 days ago
A
Retailer 3
-
HK$2,911 HKD
View
A
Retailer 4
-
HK$3,122 HKD
View
A
Retailer 5
-
HK$3,319 HKD
View
B+
Retailer 6
-
HK$3,515 HKD
View
B+
Retailer 7
-
HK$3,758 HKD
View
B+
Retailer 8
-
HK$4,181 HKD
View
B+
Retailer 9
-
HK$4,833 HKD
View
B+
Retailer 10
-
HK$6,025 HKD
View
Most Expensive
C
NZ Jewellers
fef7c7c6-ef8f-4fad-bd92-ac9859a163fb · Nov 4
HK$10,018 HKD
$1,277 USD
View
10 more retailers have this diamond
Prices start from HK$2,612 HKDSave up to HK$7,406 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 Round
HK$2,612 HKD