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Heart|Natural|IGI

1.21ct I SI2 Heart Natural Diamond

VG • I/SI2 • IGI 803629066

Shape and cutting style on the report: Heart brilliant

Certificate IGI 803629066

Diamond specifications and retailer prices

From HK$12,548 HKD
As of November 6, 2026
Save HK$11,858 HKD (49%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$35,104 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 803629066. Listed at 15 retailers as of November 4, 2026, with a 95% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
I
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle41.2°
OriginNatural
Grading LabIGI
CertificateIGI 803629066
Dimensions6.62 × 7.35 × 4.40 mm
L/W Ratio1.11
Girdle conditionFaceted
Top View
6.62 mm7.35 mm1.21 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 803629066
Side View
Table 56.0%Crown 35.8°Girdle: MED-THKPavilion 41.2°Culet: NoneDepth 59.9%

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$12,697 HKD|Low: HK$12,171 HKD|High: HK$25,519 HKD|Avg: HK$16,168 HKD|+4.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 2HK$12,548 HKD
Retailer 1HK$12,697 HKD
Retailer 6HK$14,107 HKD
Retailer 8HK$14,397 HKD
Retailer 7HK$14,632 HKD
Retailer 4HK$14,836 HKD
Retailer 9HK$17,125 HKD
Retailer 3HK$17,477 HKD
Retailer 5HK$24,406 HKD

25 data points across 9 retailers

15 retailersHK$12,548 HKD to HK$24,406 HKD

A
Cheapest Retailer
-
HK$12,548 HKD
A
Retailer 2
-
HK$12,697 HKD
View
Final sale: no returns
B+
Retailer 3
-
HK$14,107 HKD
View
Retailer 4
-
HK$14,397 HKD
View
Price last confirmed 53 days ago
Retailer 5
-
HK$14,397 HKD
View
Price last confirmed 36 days ago
Retailer 6
-
HK$14,397 HKD
View
Price last confirmed 21 days ago
B+
Retailer 7
-
HK$14,632 HKD
View
B+
Retailer 8
-
HK$14,836 HKD
View
Retailer 9
-
HK$15,056 HKD
View
Price last confirmed 36 days ago
Retailer 10
-
HK$16,607 HKD
View
Price last confirmed 61 days ago
Retailer 11
-
HK$16,607 HKD
View
Price last confirmed 38 days ago
Retailer 12
-
HK$16,607 HKD
View
Price last confirmed 52 days ago
B+
Retailer 13
-
HK$17,477 HKD
View
B
Retailer 14
-
HK$24,406 HKD
View
Most Expensive
NZ Jewellers
9c76d632-0bfd-48a8-bcfa-fa835756c98a · Sep 30
HK$35,104 HKD
$4,479 USD
View
Price last confirmed 37 days ago
14 more retailers have this diamond
Prices start from HK$12,548 HKDSave up to HK$11,858 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$12,548 HKD