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Heart|Natural|GIA

1.51ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 6545059504

Certificate GIA 6545059504

Diamond specifications and retailer prices

From HK$26,584 HKD
As of November 6, 2026
Save HK$29,139 HKD (52%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: HK$61,539 HKD at NZ Jewellers · As of October 18, 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 6545059504. Listed at 17 retailers as of November 4, 2026, with a 110% 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

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

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6545059504
Dimensions7.10 × 8.01 × 4.70 mm
L/W Ratio1.13
Top View
7.10 mm8.01 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6545059504
Side View
Table 63.0%CrownGirdle: MED-STKPavilionCulet: 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$61,539 HKD|Low: HK$26,483 HKD|High: HK$61,539 HKD|Avg: HK$38,134 HKD
NZ Jewellers
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 10HK$26,584 HKD
Retailer 8HK$27,368 HKD
Retailer 2HK$28,222 HKD
Retailer 5HK$33,748 HKD
Retailer 3HK$35,323 HKD
Retailer 6HK$35,535 HKD
Retailer 4HK$35,848 HKD
Retailer 11HK$36,248 HKD
Retailer 12HK$40,754 HKD
Retailer 7HK$42,800 HKD
Retailer 9HK$55,724 HKD
NZ JewellersHK$61,539 HKD

38 data points across 12 retailers

17 retailersHK$26,584 HKD to HK$55,724 HKD

A
Cheapest Retailer
-
HK$26,584 HKD
A
Retailer 2
-
HK$27,368 HKD
View
A
Retailer 3
-
HK$28,222 HKD
View
A
Retailer 4
-
HK$32,729 HKD
View
A
Retailer 5
-
HK$32,760 HKD
View
A
Retailer 6
-
HK$33,748 HKD
View
B+
Retailer 7
-
HK$34,680 HKD
View
Retailer 8
-
HK$35,323 HKD
View
Price last confirmed 21 days ago
Retailer 9
-
HK$35,323 HKD
View
Price last confirmed 19 days ago
Retailer 10
-
HK$35,323 HKD
View
Price last confirmed 21 days ago
A
Retailer 11
-
HK$35,535 HKD
View
Retailer 12
-
HK$35,848 HKD
View
Price last confirmed 28 days ago
B+
Retailer 13
-
HK$36,248 HKD
View
Retailer 14
-
HK$40,754 HKD
View
Price last confirmed 18 days ago
B+
Retailer 15
-
HK$42,800 HKD
View
B
Retailer 16
-
HK$55,724 HKD
View
Most Expensive
NZ Jewellers
29995b69-3b95-4f88-9472-791e51011cc6 · Oct 18
HK$61,539 HKD
$7,852 USD
View
Price last confirmed 19 days ago
16 more retailers have this diamond
Prices start from HK$26,584 HKDSave up to HK$29,139 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
1.51ct Heart
HK$26,584 HKD