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Heart|Natural|GIA

1.21ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 5563084982

Certificate GIA 5563084982

Diamond specifications and retailer prices

From HK$16,623 HKD
As of November 4, 2026
Save HK$16,200 HKD (49%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$42,228 HKD at NZ Jewellers · As of September 30, 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 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 5563084982. Listed at 10 retailers as of November 2, 2026, with a 97% 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle36.88°
OriginNatural
Grading LabGIA
CertificateGIA 5563084982
Dimensions6.70 × 7.27 × 4.17 mm
L/W Ratio1.09
Key to symbols
Twinning Wisp, Crystal, Needle
Top View
6.70 mm7.27 mm1.21 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5563084982
Side View
Table 61.0%CrownGirdle: THK-VTKPavilion 36.88°Culet: NoneDepth 57.3%

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 4
Current: HK$23,457 HKD|Low: HK$16,607 HKD|High: HK$36,405 HKD|Avg: HK$24,308 HKD|-6.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 3HK$16,623 HKD
Retailer 6HK$17,313 HKD
Retailer 2HK$19,162 HKD
Retailer 4HK$22,141 HKD
Retailer 1HK$23,457 HKD
Retailer 7HK$28,552 HKD
Retailer 5HK$32,823 HKD

37 data points across 7 retailers

10 retailersHK$16,623 HKD to HK$32,823 HKD

A
Cheapest Retailer
-
HK$16,623 HKD
A
Retailer 2
-
HK$17,313 HKD
View
B+
Retailer 3
-
HK$19,162 HKD
View
Retailer 4
-
HK$20,197 HKD
View
Price last confirmed 37 days ago
Retailer 5
-
HK$21,130 HKD
View
Price last confirmed 37 days ago
B+
Retailer 6
-
HK$22,141 HKD
View
B+
Retailer 7
-
HK$23,457 HKD
View
B
Retailer 8
-
HK$28,552 HKD
View
B
Retailer 9
-
HK$32,823 HKD
View
Most Expensive
NZ Jewellers
7dc53ffb-fc5a-4ad7-9fa2-10cac034a736 · Sep 30
HK$42,228 HKD
$5,388 USD
View
Price last confirmed 37 days ago
9 more retailers have this diamond
Prices start from HK$16,623 HKDSave up to HK$16,200 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$16,623 HKD