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Round|Natural|GIA

0.51ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 2556489534

Certificate GIA 2556489534

Diamond specifications and retailer prices

From HK$4,770 HKD
As of November 4, 2026
Save HK$13,580 HKD (74%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: HK$18,350 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 E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2556489534. Listed at 17 retailers as of November 4, 2026, with prices from HK$4,770 to HK$18,350, a HK$13,580 spread on the same certified stone. NZ Jewellers lists it at HK$18,350. 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
E
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 2556489534
Dimensions5.12 × 5.15 × 3.20 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather
Top View
5.12 mm5.15 mm0.51 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556489534
Side View
Table 56.0%Crown 33°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 62.4%

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 4
Current: HK$18,350 HKD|Low: HK$4,433 HKD|High: HK$18,350 HKD|Avg: HK$7,444 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 9HK$4,770 HKD
Retailer 3HK$4,817 HKD
Retailer 12HK$4,817 HKD
Retailer 11HK$5,115 HKD
Retailer 4HK$5,782 HKD
Retailer 8HK$5,853 HKD
Retailer 5HK$6,919 HKD
Retailer 7HK$7,469 HKD
Retailer 6HK$7,547 HKD
Retailer 2HK$8,496 HKD
Retailer 10HK$10,717 HKD
NZ JewellersHK$18,350 HKD

25 data points across 12 retailers

17 retailersHK$4,770 HKD to HK$18,350 HKD

A
Cheapest Retailer
-
HK$4,770 HKD
Retailer 2
-
HK$4,817 HKD
View
Price last confirmed 8 days ago
A
Retailer 3
-
HK$4,817 HKD
View
A
Retailer 4
-
HK$5,115 HKD
View
A
Retailer 5
-
HK$5,397 HKD
View
Final sale: no returns
A
Retailer 6
-
HK$5,492 HKD
View
A
Retailer 7
-
HK$5,782 HKD
View
A
Retailer 8
-
HK$5,853 HKD
View
A
Retailer 9
-
HK$5,947 HKD
View
B+
Retailer 10
-
HK$6,888 HKD
View
B+
Retailer 11
-
HK$6,919 HKD
View
B+
Retailer 12
-
HK$7,469 HKD
View
B+
Retailer 13
-
HK$7,547 HKD
View
B+
Retailer 14
-
HK$8,496 HKD
View
B
Retailer 15
-
HK$10,717 HKD
View
B
Retailer 16
-
HK$12,521 HKD
View
Most Expensive
B
NZ Jewellers
68532be8-a9e4-4f97-8829-47e998172be4 · Nov 4
HK$18,350 HKD
$2,339 USD
View
16 more retailers have this diamond
Prices start from HK$4,770 HKDSave up to HK$13,580 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$4,770 HKD