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1.21ct K SI2 Round Natural Diamond

EX • K/SI2 • IGI 803629479

Shape and cutting style on the report: Round brilliant

Certificate IGI 803629479

Diamond specifications and retailer prices

From HK$10,808 HKD
As of November 4, 2026
Save HK$9,569 HKD (47%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$28,450 HKD at NZ Jewellers · As of September 19, 2026
View at NZ Jewellers

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 803629479. Listed at 10 retailers as of November 4, 2026, with a 89% 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
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.6°
OriginNatural
Grading LabIGI
CertificateIGI 803629479
Dimensions6.76 × 6.78 × 4.28 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
6.76 mm6.78 mm1.21 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 803629479
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41.6°CuletDepth 63.3%

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$16,137 HKD|Low: HK$10,808 HKD|High: HK$20,652 HKD|Avg: HK$13,774 HKD|+2.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 4HK$10,808 HKD
Retailer 3HK$11,349 HKD
Retailer 6HK$11,662 HKD
Retailer 5HK$12,132 HKD
Retailer 7HK$12,728 HKD
Retailer 8HK$13,880 HKD
Retailer 1HK$16,137 HKD
Retailer 2HK$20,377 HKD

23 data points across 8 retailers

10 retailersHK$10,808 HKD to HK$20,377 HKD

A
Cheapest Retailer
-
HK$10,808 HKD
A
Retailer 2
-
HK$11,349 HKD
View
Retailer 3
-
HK$11,662 HKD
View
Price last confirmed 51 days ago
B+
Retailer 4
-
HK$12,132 HKD
View
B+
Retailer 5
-
HK$12,728 HKD
View
Retailer 6
-
HK$13,457 HKD
View
Price last confirmed 61 days ago
Retailer 7
-
HK$13,457 HKD
View
Price last confirmed 49 days ago
B+
Retailer 8
-
HK$16,137 HKD
View
B
Retailer 9
-
HK$20,377 HKD
View
Most Expensive
NZ Jewellers
0fb3d9da-15a2-455c-ad7a-e67fd1ab4732 · Sep 19
HK$28,450 HKD
$3,630 USD
View
Price last confirmed 48 days ago
9 more retailers have this diamond
Prices start from HK$10,808 HKDSave up to HK$9,569 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 Round
HK$10,808 HKD