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Heart|Natural|GIA

1.20ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 6382112830

Certificate GIA 6382112830

Diamond specifications and retailer prices

From HK$18,410 HKD
As of November 6, 2026
Save HK$25,072 HKD (58%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$43,482 HKD at NZ Jewellers · As of November 5, 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 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 6382112830. Listed at 20 retailers as of November 5, 2026, with prices from HK$18,410 to HK$43,482, a HK$25,072 spread on the same certified stone. NZ Jewellers lists it at HK$43,482. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6382112830
Dimensions6.70 × 7.12 × 4.18 mm
L/W Ratio1.06
Culet sizeNone
Top View
6.70 mm7.12 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6382112830
Side View
Table 56.0%CrownGirdle: VTN-ETKPavilionCulet: NoneDepth 58.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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$23,630 HKD|Low: HK$20,087 HKD|High: HK$41,225 HKD|Avg: HK$27,220 HKD|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 3HK$20,479 HKD
Retailer 7HK$22,352 HKD
Retailer 1HK$23,630 HKD
Retailer 8HK$25,918 HKD
Retailer 6HK$26,757 HKD
Retailer 2HK$29,053 HKD
Retailer 4HK$30,464 HKD
Retailer 5HK$40,629 HKD

38 data points across 8 retailers

20 retailersHK$18,410 HKD to HK$43,482 HKD

B+
Cheapest Retailer
-
HK$18,410 HKD
B+
Retailer 2
-
HK$20,479 HKD
View
B+
Retailer 3
-
HK$20,573 HKD
View
B
Retailer 4
-
HK$21,310 HKD
View
B
Retailer 5
-
HK$21,710 HKD
View
B
Retailer 6
-
HK$21,710 HKD
View
B
Retailer 7
-
HK$22,352 HKD
View
B
Retailer 8
-
HK$22,415 HKD
View
B
Retailer 9
-
HK$23,630 HKD
View
B
Retailer 10
-
HK$24,218 HKD
View
B
Retailer 11
-
HK$24,962 HKD
View
Retailer 12
-
HK$24,962 HKD
View
Price last confirmed 8 days ago
B
Retailer 13
-
HK$25,918 HKD
View
B
Retailer 14
-
HK$26,075 HKD
View
Retailer 15
-
HK$26,757 HKD
View
Price last confirmed 33 days ago
B
Retailer 16
-
HK$28,795 HKD
View
B
Retailer 17
-
HK$29,053 HKD
View
B
Retailer 18
-
HK$30,464 HKD
View
B
Retailer 19
-
HK$40,629 HKD
View
Most Expensive
B
NZ Jewellers
08aad0d8-8048-47ea-b6a4-44e956ae65b9 · Nov 5
HK$43,482 HKD
$5,548 USD
View
19 more retailers have this diamond
Prices start from HK$18,410 HKDSave up to HK$25,072 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.

B+
1.20ct Heart
HK$18,410 HKD