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Heart|Natural|GIA

1.51ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 6555506948

Certificate GIA 6555506948

Diamond specifications and retailer prices

From HK$27,282 HKD
As of November 6, 2026
Save HK$36,561 HKD (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$63,843 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 6555506948. Listed at 18 retailers as of November 5, 2026, with prices from HK$27,282 to HK$63,843, a HK$36,561 spread on the same certified stone. NZ Jewellers lists it at HK$63,843. 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
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555506948
Dimensions7.00 × 7.88 × 4.58 mm
L/W Ratio1.13
Girdle conditionFaceted
Top View
7.00 mm7.88 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555506948
Side View
Table 59.0%CrownGirdle: MED-THKPavilionCulet: NDepth 58.2%

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$63,843 HKD|Low: HK$26,882 HKD|High: HK$65,168 HKD|Avg: HK$38,612 HKD|-2.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 6, 2026
Retailer 16HK$27,282 HKD
Retailer 4HK$27,400 HKD
Retailer 14HK$29,132 HKD
Retailer 6HK$30,597 HKD
Retailer 8HK$30,636 HKD
Retailer 3HK$30,644 HKD
Retailer 2HK$31,005 HKD
Retailer 9HK$31,546 HKD
Retailer 15HK$33,936 HKD
Retailer 11HK$34,054 HKD
Retailer 10HK$34,579 HKD
Retailer 5HK$35,135 HKD
Retailer 12HK$44,705 HKD
Retailer 17HK$46,476 HKD
Retailer 7HK$56,860 HKD
Retailer 13HK$58,201 HKD
NZ JewellersHK$63,843 HKD

21 data points across 17 retailers

18 retailersHK$27,282 HKD to HK$63,843 HKD

A
Cheapest Retailer
-
HK$27,282 HKD
A
Retailer 2
-
HK$27,400 HKD
View
A
Retailer 3
-
HK$29,132 HKD
View
A
Retailer 4
-
HK$30,597 HKD
View
A
Retailer 5
-
HK$30,636 HKD
View
A
Retailer 6
-
HK$30,644 HKD
View
Final sale: no returns
A
Retailer 7
-
HK$31,005 HKD
View
A
Retailer 8
-
HK$31,546 HKD
View
A
Retailer 9
-
HK$33,936 HKD
View
A
Retailer 10
-
HK$34,054 HKD
View
A
Retailer 11
-
HK$34,579 HKD
View
A
Retailer 12
-
HK$35,135 HKD
View
Retailer 13
-
HK$39,493 HKD
View
Price last confirmed 29 days ago
B+
Retailer 14
-
HK$44,705 HKD
View
B
Retailer 15
-
HK$46,476 HKD
View
B
Retailer 16
-
HK$56,860 HKD
View
B
Retailer 17
-
HK$58,201 HKD
View
Most Expensive
B
NZ Jewellers
28ec3ddb-0863-4b50-998a-7b353d1e8e5b · Nov 5
HK$63,843 HKD
$8,146 USD
View
17 more retailers have this diamond
Prices start from HK$27,282 HKDSave up to HK$36,561 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$27,282 HKD