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0.51ct I SI2 Round Natural Diamond

EX • I/SI2 • IGI 839658055

Shape and cutting style on the report: Round brilliant

Certificate IGI 839658055

Diamond specifications and retailer prices

From HK$2,071 HKD
As of November 6, 2026
Save HK$8,983 HKD (81%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$11,054 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 839658055. Listed at 11 retailers as of November 4, 2026, with prices from HK$2,071 to HK$11,054, a HK$8,983 spread on the same certified stone. NZ Jewellers lists it at HK$11,054. 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
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36.3°
Pavilion angle41.6°
OriginNatural
Grading LabIGI
CertificateIGI 839658055
Dimensions5.02 × 5.04 × 3.22 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
5.02 mm5.04 mm0.51 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI 839658055
Side View
Table 62.0%Crown 36.3°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.2%

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 6
Current: HK$11,054 HKD|Low: HK$2,071 HKD|High: HK$11,054 HKD|Avg: HK$4,315 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 2HK$2,071 HKD
Retailer 9HK$2,652 HKD
Retailer 7HK$3,217 HKD
Retailer 3HK$3,421 HKD
Retailer 5HK$3,828 HKD
Retailer 6HK$3,883 HKD
Retailer 10HK$4,472 HKD
Retailer 4HK$4,699 HKD
Retailer 8HK$6,653 HKD
NZ JewellersHK$11,054 HKD

21 data points across 10 retailers

11 retailersHK$2,071 HKD to HK$11,054 HKD

A
Cheapest Retailer
-
HK$2,071 HKD
A
Retailer 2
-
HK$2,652 HKD
View
Final sale: no returns
B+
Retailer 3
-
HK$2,887 HKD
View
B+
Retailer 4
-
HK$3,217 HKD
View
A
Retailer 5
-
HK$3,421 HKD
View
B+
Retailer 6
-
HK$3,828 HKD
View
B+
Retailer 7
-
HK$3,883 HKD
View
B+
Retailer 8
-
HK$4,472 HKD
View
B+
Retailer 9
-
HK$4,699 HKD
View
B
Retailer 10
-
HK$6,653 HKD
View
Most Expensive
C
NZ Jewellers
f4087ce1-d799-425c-9e0a-733ab293a0cb · Nov 4
HK$11,054 HKD
$1,409 USD
View
10 more retailers have this diamond
Prices start from HK$2,071 HKDSave up to HK$8,983 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$2,071 HKD