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Heart|Natural|GIA

1.20ct H SI1 Heart Natural Diamond

ID • H/SI1 • GIA 3545938134

Certificate GIA 3545938134

Diamond specifications and retailer prices

From HK$16,647 HKD
As of November 6, 2026
Save HK$21,514 HKD (56%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: HK$45,919 HKD at NZ Jewellers · As of October 18, 2026
View at NZ Jewellers

About this 1.2ct natural heart diamond

This 1.2ct natural heart sits in the classic one-carat band, graded H 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 3545938134. Listed at 22 retailers as of November 4, 2026, with a 129% 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

1.20
Carat
H
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3545938134
Dimensions6.60 × 7.51 × 4.44 mm
L/W Ratio1.14
Top View
6.60 mm7.51 mm1.20 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 3545938134
Side View
Table 63.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 59.1%

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$45,919 HKD|Low: HK$16,647 HKD|High: HK$45,919 HKD|Avg: HK$26,980 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
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 3HK$16,647 HKD
Retailer 2HK$17,328 HKD
Retailer 13HK$19,578 HKD
Retailer 5HK$20,158 HKD
Retailer 14HK$20,573 HKD
Retailer 9HK$21,184 HKD
Retailer 8HK$21,960 HKD
Retailer 4HK$22,948 HKD
Retailer 10HK$23,089 HKD
Retailer 11HK$23,112 HKD
Retailer 16HK$23,747 HKD
Retailer 7HK$25,346 HKD
Retailer 12HK$26,655 HKD
Retailer 15HK$38,160 HKD
Retailer 6HK$45,183 HKD
NZ JewellersHK$45,919 HKD

24 data points across 16 retailers

22 retailersHK$16,647 HKD to HK$38,160 HKD

A
Cheapest Retailer
-
HK$16,647 HKD
A
Retailer 2
-
HK$17,328 HKD
View
B+
Retailer 3
-
HK$19,578 HKD
View
B+
Retailer 4
-
HK$20,158 HKD
View
Final sale: no returns
B+
Retailer 5
-
HK$20,573 HKD
View
B+
Retailer 6
-
HK$20,793 HKD
View
B+
Retailer 7
-
HK$20,808 HKD
View
B+
Retailer 8
-
HK$21,184 HKD
View
Retailer 9
-
HK$21,960 HKD
View
Price last confirmed 19 days ago
Retailer 10
-
HK$22,188 HKD
View
Price last confirmed 21 days ago
B+
Retailer 11
-
HK$22,948 HKD
View
Retailer 12
-
HK$23,042 HKD
View
Price last confirmed 21 days ago
B+
Retailer 13
-
HK$23,089 HKD
View
B+
Retailer 14
-
HK$23,112 HKD
View
B+
Retailer 15
-
HK$23,575 HKD
View
B+
Retailer 16
-
HK$23,747 HKD
View
Retailer 17
-
HK$24,993 HKD
View
Price last confirmed 30 days ago
Retailer 18
-
HK$25,346 HKD
View
Price last confirmed 18 days ago
B+
Retailer 19
-
HK$26,655 HKD
View
B
Retailer 20
-
HK$38,160 HKD
View
Retailer 21
-
HK$45,183 HKD
View
Price last confirmed 9 days ago
Most Expensive
NZ Jewellers
dd034e2e-e7de-4487-a812-4eff1fbf8c7e · Oct 18
HK$45,919 HKD
$5,859 USD
View
Price last confirmed 19 days ago
21 more retailers have this diamond
Prices start from HK$16,647 HKDSave up to HK$21,514 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
1.20ct Heart
HK$16,647 HKD