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Heart|Natural|GIA

0.51ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 3545408166

Certificate GIA 3545408166

Diamond specifications and retailer prices

From HK$3,104 HKD
As of November 6, 2026
Save HK$6,027 HKD (66%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$12,579 HKD at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 0.51ct natural heart diamond

This 0.51ct natural heart sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3545408166. Listed at 13 retailers as of November 4, 2026, with a 194% 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Pavilion angle42°
OriginNatural
Grading LabGIA
CertificateGIA 3545408166
Dimensions4.87 × 5.71 × 3.35 mm
L/W Ratio1.17
Top View
4.87 mm5.71 mm0.51 ctH / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 3545408166
Side View
Table 59.0%CrownGirdle: MED-VTKPavilion 42°Culet: NoneDepth 58.7%

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$3,981 HKD|Low: HK$2,657 HKD|High: HK$9,750 HKD|Avg: HK$5,045 HKD|-6.1%
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 6, 2026
Retailer 12HK$3,104 HKD
Retailer 2HK$3,605 HKD
Retailer 3HK$3,652 HKD
Retailer 7HK$3,778 HKD
Retailer 5HK$3,895 HKD
Retailer 1HK$3,981 HKD
Retailer 6HK$4,248 HKD
Retailer 10HK$5,518 HKD
Retailer 11HK$5,525 HKD
Retailer 8HK$6,145 HKD
Retailer 4HK$6,223 HKD
Retailer 9HK$9,131 HKD

36 data points across 12 retailers

13 retailersHK$3,104 HKD to HK$9,131 HKD

A
Cheapest Retailer
-
HK$3,104 HKD
A
Retailer 2
-
HK$3,605 HKD
View
B+
Retailer 3
-
HK$3,652 HKD
View
Final sale: no returns
A
Retailer 4
-
HK$3,778 HKD
View
A
Retailer 5
-
HK$3,895 HKD
View
B+
Retailer 6
-
HK$3,981 HKD
View
B+
Retailer 7
-
HK$4,248 HKD
View
B+
Retailer 8
-
HK$5,518 HKD
View
B+
Retailer 9
-
HK$5,525 HKD
View
B
Retailer 10
-
HK$6,145 HKD
View
Retailer 11
-
HK$6,223 HKD
View
Price last confirmed 34 days ago
B
Retailer 12
-
HK$9,131 HKD
View
Most Expensive
NZ Jewellers
90cec75c-5fc3-44e1-aea5-17ebe829a068 · Sep 25
HK$12,579 HKD
$1,605 USD
View
Price under review
12 more retailers have this diamond
Prices start from HK$3,104 HKDSave up to HK$6,027 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 Heart
HK$3,104 HKD