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0.51ct I SI2 Round Natural Diamond

EX • I/SI2 • IGI 841685200

Shape and cutting style on the report: Round brilliant

Certificate IGI 841685200

Diamond specifications and retailer prices

From HK$2,181 HKD
As of November 6, 2026
Save HK$9,383 HKD (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$11,564 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 841685200. Listed at 12 retailers as of November 4, 2026, with prices from HK$2,181 to HK$11,564, a HK$9,383 spread on the same certified stone. NZ Jewellers lists it at HK$11,564. 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
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle40.3°
OriginNatural
Grading LabIGI
CertificateIGI 841685200
Dimensions5.11 × 5.19 × 3.09 mm
L/W Ratio1.02
Girdle conditionFaceted
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
5.11 mm5.19 mm0.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 841685200
Side View
Table 59.0%Crown 34.7°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 60.2%

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$11,564 HKD|Low: HK$2,181 HKD|High: HK$11,564 HKD|Avg: HK$4,327 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
November 6, 2026
Retailer 2HK$2,181 HKD
Retailer 3HK$2,777 HKD
Retailer 12HK$3,020 HKD
Retailer 8HK$3,099 HKD
Retailer 11HK$3,366 HKD
Retailer 5HK$3,577 HKD
Retailer 7HK$3,985 HKD
Retailer 10HK$4,064 HKD
Retailer 4HK$4,589 HKD
Retailer 6HK$4,888 HKD
Retailer 9HK$6,951 HKD
NZ JewellersHK$11,564 HKD

21 data points across 12 retailers

12 retailersHK$2,181 HKD to HK$11,564 HKD

A
Cheapest Retailer
-
HK$2,181 HKD
A
Retailer 2
-
HK$2,777 HKD
View
Final sale: no returns
A
Retailer 3
-
HK$3,020 HKD
View
A
Retailer 4
-
HK$3,099 HKD
View
A
Retailer 5
-
HK$3,366 HKD
View
A
Retailer 6
-
HK$3,577 HKD
View
A
Retailer 7
-
HK$3,985 HKD
View
A
Retailer 8
-
HK$4,064 HKD
View
B+
Retailer 9
-
HK$4,589 HKD
View
A
Retailer 10
-
HK$4,888 HKD
View
B
Retailer 11
-
HK$6,951 HKD
View
Most Expensive
C
NZ Jewellers
b667473d-a753-4bb3-887c-c678a9e7309a · Nov 4
HK$11,564 HKD
$1,474 USD
View
11 more retailers have this diamond
Prices start from HK$2,181 HKDSave up to HK$9,383 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$2,181 HKD