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Round|Natural|GIA

0.51ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 1535044773

Certificate GIA 1535044773

Diamond specifications and retailer prices

From HK$3,185 HKD
As of November 6, 2026
Save HK$7,139 HKD (69%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$14,051 HKD at NZ Jewellers · As of October 27, 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 GIA 1535044773. Listed at 15 retailers as of November 4, 2026, with a 224% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
FluorescenceMedium
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1535044773
Dimensions5.11 × 5.09 × 3.19 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Culet sizeNone
Key to symbols
Cloud
Top View
5.11 mm5.09 mm0.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1535044773
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.6%

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$3,185 HKD|Low: HK$3,185 HKD|High: HK$10,465 HKD|Avg: HK$5,560 HKD|-2.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 1HK$3,185 HKD
Retailer 9HK$4,134 HKD
Retailer 6HK$4,511 HKD
Retailer 3HK$4,597 HKD
Retailer 8HK$5,170 HKD
Retailer 2HK$5,319 HKD
Retailer 4HK$5,405 HKD
Retailer 5HK$5,837 HKD
Retailer 7HK$10,324 HKD

29 data points across 9 retailers

15 retailersHK$3,185 HKD to HK$10,324 HKD

A
Cheapest Retailer
-
HK$3,185 HKD
A
Retailer 2
-
HK$3,711 HKD
View
A
Retailer 3
-
HK$4,134 HKD
View
Final sale: no returns
A
Retailer 4
-
HK$4,511 HKD
View
A
Retailer 5
-
HK$4,597 HKD
View
A
Retailer 6
-
HK$4,825 HKD
View
Retailer 7
-
HK$5,170 HKD
View
Price last confirmed 10 days ago
B+
Retailer 8
-
HK$5,170 HKD
View
B+
Retailer 9
-
HK$5,319 HKD
View
B+
Retailer 10
-
HK$5,343 HKD
View
B+
Retailer 11
-
HK$5,405 HKD
View
B+
Retailer 12
-
HK$5,837 HKD
View
B
Retailer 13
-
HK$6,935 HKD
View
B
Retailer 14
-
HK$10,324 HKD
View
Most Expensive
NZ Jewellers
fb916022-03e4-4531-afed-4b3324334911 · Oct 27
HK$14,051 HKD
$1,791 USD
View
Price last confirmed 10 days ago
14 more retailers have this diamond
Prices start from HK$3,185 HKDSave up to HK$7,139 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$3,185 HKD