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Heart|Natural|GIA

1.21ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 2245042739

Certificate GIA 2245042739

Diamond specifications and retailer prices

From HK$12,634 HKD
As of November 6, 2026
Save HK$23,316 HKD (65%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$35,950 HKD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.21ct natural heart diamond

This 1.21ct natural heart sits in the classic one-carat band, graded J 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 2245042739. Listed at 12 retailers as of November 5, 2026, with prices from HK$12,634 to HK$35,950, a HK$23,316 spread on the same certified stone. NZ Jewellers lists it at HK$35,950. 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

1.21
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Pavilion angle38.94°
OriginNatural
Grading LabGIA
CertificateGIA 2245042739
Dimensions6.61 × 7.21 × 4.29 mm
L/W Ratio1.09
Key to symbols
Twinning Wisp, Feather, Crystal, Needle
Top View
6.61 mm7.21 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 2245042739
Side View
Table 62.0%CrownGirdle: THK-VTKPavilion 38.94°Culet: NoneDepth 59.5%

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$35,950 HKD|Low: HK$12,634 HKD|High: HK$38,411 HKD|Avg: HK$21,670 HKD|-6.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 10HK$12,634 HKD
Retailer 3HK$16,302 HKD
Retailer 2HK$16,678 HKD
Retailer 6HK$17,195 HKD
Retailer 5HK$17,571 HKD
Retailer 9HK$17,987 HKD
Retailer 7HK$18,904 HKD
Retailer 4HK$21,302 HKD
Retailer 11HK$26,247 HKD
Retailer 8HK$30,049 HKD
NZ JewellersHK$35,950 HKD

38 data points across 11 retailers

12 retailersHK$12,634 HKD to HK$35,950 HKD

A
Cheapest Retailer
-
HK$12,634 HKD
B+
Retailer 2
-
HK$16,302 HKD
View
B+
Retailer 3
-
HK$16,678 HKD
View
B+
Retailer 4
-
HK$17,195 HKD
View
B+
Retailer 5
-
HK$17,571 HKD
View
B+
Retailer 6
-
HK$17,987 HKD
View
B+
Retailer 7
-
HK$18,904 HKD
View
B
Retailer 8
-
HK$19,343 HKD
View
B+
Retailer 9
-
HK$21,302 HKD
View
B
Retailer 10
-
HK$26,247 HKD
View
B
Retailer 11
-
HK$30,049 HKD
View
Most Expensive
B
NZ Jewellers
4f1787ab-5746-4b1c-9857-b23407ac4cfd · Nov 5
HK$35,950 HKD
$4,587 USD
View
11 more retailers have this diamond
Prices start from HK$12,634 HKDSave up to HK$23,316 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
1.21ct Heart
HK$12,634 HKD