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Heart|Natural|GIA

1.21ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 6552329003

Certificate GIA 6552329003

Diamond specifications and retailer prices

From HK$13,739 HKD
As of November 6, 2026
Save HK$18,018 HKD (57%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: HK$41,146 HKD at NZ Jewellers · As of September 25, 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 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 6552329003. Listed at 17 retailers as of November 4, 2026, with a 131% 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

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

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552329003
Dimensions6.29 × 7.39 × 4.32 mm
L/W Ratio1.17
Girdle conditionFaceted
Top View
6.29 mm7.39 mm1.21 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552329003
Side View
Table 59.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 58.5%

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$16,004 HKD|Low: HK$13,543 HKD|High: HK$33,991 HKD|Avg: HK$19,309 HKD|-5.2%
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 3HK$13,739 HKD
Retailer 5HK$14,570 HKD
Retailer 13HK$15,032 HKD
Retailer 4HK$15,197 HKD
Retailer 1HK$16,004 HKD
Retailer 11HK$16,137 HKD
Retailer 6HK$16,506 HKD
Retailer 12HK$16,654 HKD
Retailer 15HK$16,929 HKD
Retailer 8HK$17,893 HKD
Retailer 2HK$18,677 HKD
Retailer 9HK$22,188 HKD
Retailer 7HK$23,661 HKD
Retailer 14HK$27,870 HKD
Retailer 10HK$31,757 HKD

28 data points across 15 retailers

17 retailersHK$13,739 HKD to HK$31,757 HKD

A
Cheapest Retailer
-
HK$13,739 HKD
A
Retailer 2
-
HK$14,570 HKD
View
A
Retailer 3
-
HK$15,032 HKD
View
A
Retailer 4
-
HK$15,197 HKD
View
Final sale: no returns
A
Retailer 5
-
HK$16,004 HKD
View
A
Retailer 6
-
HK$16,137 HKD
View
A
Retailer 7
-
HK$16,506 HKD
View
B+
Retailer 8
-
HK$16,654 HKD
View
A
Retailer 9
-
HK$16,929 HKD
View
B+
Retailer 10
-
HK$17,893 HKD
View
B+
Retailer 11
-
HK$18,677 HKD
View
B+
Retailer 12
-
HK$20,667 HKD
View
B+
Retailer 13
-
HK$22,188 HKD
View
Retailer 14
-
HK$23,661 HKD
View
Price last confirmed 31 days ago
B
Retailer 15
-
HK$27,870 HKD
View
B
Retailer 16
-
HK$31,757 HKD
View
Most Expensive
NZ Jewellers
af40f1d1-938f-4390-8250-a7638881247b · Sep 25
HK$41,146 HKD
$5,250 USD
View
Price last confirmed 42 days ago
16 more retailers have this diamond
Prices start from HK$13,739 HKDSave up to HK$18,018 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$13,739 HKD