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0.51ct K SI2 Round Natural Diamond

EX • K/SI2 • IGI 670418814

Shape and cutting style on the report: Round brilliant

Certificate IGI 670418814

Diamond specifications and retailer prices

From HK$2,157 HKD
As of November 5, 2026
Save HK$7,618 HKD (78%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$9,775 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 IGI 670418814. Listed at 13 retailers as of November 4, 2026, with prices from HK$2,157 to HK$9,775, a HK$7,618 spread on the same certified stone. NZ Jewellers lists it at HK$9,775. 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 angle32.5°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 670418814
Dimensions5.15 × 5.12 × 3.14 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
5.15 mm5.12 mm0.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 670418814
Side View
Table 57.0%Crown 32.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.2%

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 5
Current: HK$3,036 HKD|Low: HK$2,157 HKD|High: HK$5,037 HKD|Avg: HK$3,077 HKD|+5.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 4HK$2,157 HKD
Retailer 6HK$2,236 HKD
Retailer 9HK$2,267 HKD
Retailer 11HK$2,322 HKD
Retailer 8HK$2,707 HKD
Retailer 1HK$3,036 HKD
Retailer 2HK$3,177 HKD
Retailer 10HK$3,177 HKD
Retailer 3HK$3,240 HKD
Retailer 12HK$3,530 HKD
Retailer 5HK$4,127 HKD
Retailer 7HK$4,982 HKD

23 data points across 12 retailers

13 retailersHK$2,157 HKD to HK$9,775 HKD

A
Cheapest Retailer
-
HK$2,157 HKD
A
Retailer 2
-
HK$2,236 HKD
View
Retailer 3
-
HK$2,322 HKD
View
Price last confirmed 8 days ago
A
Retailer 4
-
HK$2,408 HKD
View
Retailer 5
-
HK$2,707 HKD
View
Price last confirmed 42 days ago
Retailer 6
-
HK$2,903 HKD
View
Price last confirmed 63 days ago
B+
Retailer 7
-
HK$2,903 HKD
View
B+
Retailer 8
-
HK$3,036 HKD
View
B+
Retailer 9
-
HK$3,177 HKD
View
B+
Retailer 10
-
HK$4,127 HKD
View
B+
Retailer 11
-
HK$4,982 HKD
View
Retailer 12
-
HK$9,775 HKD
View
Price last confirmed 66 days ago
Most Expensive
C
NZ Jewellers
6f82cb98-7cb0-4025-b245-448f57a419c4 · Nov 4
HK$9,775 HKD
$1,246 USD
View
12 more retailers have this diamond
Prices start from HK$2,157 HKDSave up to HK$7,618 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$2,157 HKD