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Heart|Natural|GIA

1.51ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 2556435166

Certificate GIA 2556435166

Diamond specifications and retailer prices

From HK$30,009 HKD
As of November 6, 2026
Save HK$34,626 HKD (54%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: HK$73,131 HKD at NZ Jewellers · As of September 25, 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 2556435166. Listed at 17 retailers as of November 4, 2026, with a 115% 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
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556435166
Dimensions6.83 × 7.97 × 4.68 mm
L/W Ratio1.17
Girdle conditionFaceted
Top View
6.83 mm7.97 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556435166
Side View
Table 58.0%CrownGirdle: STK-VTKPavilionCulet: 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$34,077 HKD|Low: HK$29,649 HKD|High: HK$68,663 HKD|Avg: HK$40,624 HKD|-4.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 5HK$30,009 HKD
Retailer 3HK$30,292 HKD
Retailer 12HK$32,259 HKD
Retailer 6HK$33,732 HKD
Retailer 11HK$33,818 HKD
Retailer 4HK$34,030 HKD
Retailer 1HK$34,077 HKD
Retailer 14HK$34,798 HKD
Retailer 15HK$36,366 HKD
Retailer 8HK$37,972 HKD
Retailer 2HK$39,015 HKD
Retailer 7HK$43,059 HKD
Retailer 9HK$49,642 HKD
Retailer 13HK$62,691 HKD
Retailer 10HK$64,635 HKD

28 data points across 15 retailers

17 retailersHK$30,009 HKD to HK$64,635 HKD

A
Cheapest Retailer
-
HK$30,009 HKD
A
Retailer 2
-
HK$30,292 HKD
View
A
Retailer 3
-
HK$32,259 HKD
View
A
Retailer 4
-
HK$33,732 HKD
View
A
Retailer 5
-
HK$33,818 HKD
View
A
Retailer 6
-
HK$34,030 HKD
View
Final sale: no returns
A
Retailer 7
-
HK$34,077 HKD
View
A
Retailer 8
-
HK$34,798 HKD
View
B+
Retailer 9
-
HK$36,366 HKD
View
B+
Retailer 10
-
HK$37,972 HKD
View
B+
Retailer 11
-
HK$39,015 HKD
View
Retailer 12
-
HK$43,059 HKD
View
Price last confirmed 29 days ago
B+
Retailer 13
-
HK$43,388 HKD
View
B+
Retailer 14
-
HK$49,642 HKD
View
B
Retailer 15
-
HK$62,691 HKD
View
B
Retailer 16
-
HK$64,635 HKD
View
Most Expensive
NZ Jewellers
97ff1fbe-ddc2-4b37-a53f-63da8904c8ed · Sep 25
HK$73,131 HKD
$9,331 USD
View
Price last confirmed 42 days ago
16 more retailers have this diamond
Prices start from HK$30,009 HKDSave up to HK$34,626 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$30,009 HKD