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Heart|Natural|GIA

1.51ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 3555728617

Certificate GIA 3555728617

Diamond specifications and retailer prices

From HK$26,083 HKD
As of November 6, 2026
Save HK$35,323 HKD (58%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$61,406 HKD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded I 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 3555728617. Listed at 10 retailers as of November 5, 2026, with prices from HK$26,083 to HK$61,406, a HK$35,323 spread on the same certified stone. NZ Jewellers lists it at HK$61,406. 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

1.51
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle34.89°
OriginNatural
Grading LabGIA
CertificateGIA 3555728617
Dimensions7.56 × 8.04 × 4.05 mm
L/W Ratio1.06
Key to symbols
Twinning Wisp, Feather, Crystal
Top View
7.56 mm8.04 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 3555728617
Side View
Table 55.0%CrownGirdle: STK-VTKPavilion 34.89°Culet: NoneDepth 53.6%

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$61,406 HKD|Low: HK$26,083 HKD|High: HK$67,582 HKD|Avg: HK$40,471 HKD|-9.1%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 9HK$26,083 HKD
Retailer 5HK$30,049 HKD
Retailer 8HK$31,318 HKD
Retailer 3HK$32,870 HKD
Retailer 6HK$35,245 HKD
Retailer 7HK$35,245 HKD
Retailer 10HK$38,043 HKD
Retailer 2HK$40,308 HKD
Retailer 4HK$55,983 HKD
NZ JewellersHK$61,406 HKD

41 data points across 10 retailers

10 retailersHK$26,083 HKD to HK$61,406 HKD

A
Cheapest Retailer
-
HK$26,083 HKD
A
Retailer 2
-
HK$30,049 HKD
View
A
Retailer 3
-
HK$31,318 HKD
View
A
Retailer 4
-
HK$32,870 HKD
View
B+
Retailer 5
-
HK$35,245 HKD
View
A
Retailer 6
-
HK$35,245 HKD
View
B+
Retailer 7
-
HK$38,043 HKD
View
B+
Retailer 8
-
HK$40,308 HKD
View
B
Retailer 9
-
HK$55,983 HKD
View
Most Expensive
B
NZ Jewellers
5ee50bfa-4b5f-4949-8ef4-69ff66f075be · Nov 5
HK$61,406 HKD
$7,835 USD
View
9 more retailers have this diamond
Prices start from HK$26,083 HKDSave up to HK$35,323 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
1.51ct Heart
HK$26,083 HKD