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Heart|Natural|GIA

0.51ct K SI1 Heart Natural Diamond

EX • K/SI1 • GIA 5231856783

Certificate GIA 5231856783

Diamond specifications and retailer prices

From HK$3,754 HKD
As of November 5, 2026
Save HK$10,620 HKD (74%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$14,374 HKD at NZ Jewellers · As of November 5, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5231856783. Listed at 11 retailers as of November 5, 2026, with prices from HK$3,754 to HK$14,374, a HK$10,620 spread on the same certified stone. NZ Jewellers lists it at HK$14,374. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 5231856783
Dimensions4.69 × 5.47 × 3.40 mm
L/W Ratio1.17
Top View
4.69 mm5.47 mm0.51 ctK / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceMedium
CertificateGIA 5231856783
Side View
Table 55.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 62.0%

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$14,374 HKD|Low: HK$3,754 HKD|High: HK$14,374 HKD|Avg: HK$5,905 HKD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 10HK$3,754 HKD
Retailer 9HK$4,036 HKD
Retailer 11HK$4,146 HKD
Retailer 4HK$4,287 HKD
Retailer 5HK$4,295 HKD
Retailer 2HK$4,530 HKD
Retailer 3HK$4,883 HKD
Retailer 8HK$5,369 HKD
Retailer 6HK$5,815 HKD
Retailer 7HK$8,645 HKD
NZ JewellersHK$14,374 HKD

44 data points across 11 retailers

11 retailersHK$3,754 HKD to HK$14,374 HKD

A
Cheapest Retailer
-
HK$3,754 HKD
B+
Retailer 2
-
HK$4,036 HKD
View
B+
Retailer 3
-
HK$4,287 HKD
View
B+
Retailer 4
-
HK$4,295 HKD
View
B+
Retailer 5
-
HK$4,530 HKD
View
B
Retailer 6
-
HK$4,883 HKD
View
B
Retailer 7
-
HK$5,079 HKD
View
B
Retailer 8
-
HK$5,369 HKD
View
B
Retailer 9
-
HK$5,815 HKD
View
B
Retailer 10
-
HK$8,645 HKD
View
Most Expensive
C
NZ Jewellers
31f6a0a0-52ac-48c8-8fcf-10c7aa63085e · Nov 5
HK$14,374 HKD
$1,834 USD
View
10 more retailers have this diamond
Prices start from HK$3,754 HKDSave up to HK$10,620 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$3,754 HKD