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Heart|Natural|GIA

1.21ct K SI2 Heart Natural Diamond

EX • K/SI2 • GIA 2434019421

Certificate GIA 2434019421

Diamond specifications and retailer prices

From HK$12,540 HKD
As of November 6, 2026
Save HK$17,062 HKD (58%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$29,602 HKD at MOH London · As of November 4, 2026
View at MOH London

About this 1.21ct natural heart diamond

This 1.21ct natural heart sits in the classic one-carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2434019421. Listed at 12 retailers as of November 4, 2026, with prices from HK$12,540 to HK$29,602, a HK$17,062 spread on the same certified stone. MOH London lists it at HK$29,602. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2434019421
Dimensions6.20 × 5.86 × 4.10 mm
L/W Ratio1.06
Top View
6.20 mm5.86 mm1.21 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2434019421
Side View
Table 61.0%CrownGirdle: ThickPavilionCulet: NoneDepth 69.9%

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$29,602 HKD|Low: HK$12,438 HKD|High: HK$29,990 HKD|Avg: HK$17,978 HKD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 8HK$12,540 HKD
Retailer 10HK$14,985 HKD
Retailer 13HK$15,299 HKD
Retailer 5HK$15,886 HKD
Retailer 11HK$16,169 HKD
Retailer 9HK$16,937 HKD
Retailer 2HK$17,321 HKD
Retailer 3HK$17,791 HKD
Retailer 12HK$18,026 HKD
Retailer 7HK$18,402 HKD
Retailer 4HK$20,409 HKD
Retailer 6HK$21,028 HKD
MOH LondonHK$29,602 HKD

31 data points across 13 retailers

12 retailersHK$12,540 HKD to HK$29,602 HKD

A
Cheapest Retailer
-
HK$12,540 HKD
B+
Retailer 2
-
HK$14,985 HKD
View
B+
Retailer 3
-
HK$15,299 HKD
View
B+
Retailer 4
-
HK$16,169 HKD
View
Retailer 5
-
HK$16,937 HKD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
HK$17,321 HKD
View
B+
Retailer 7
-
HK$17,485 HKD
View
B
Retailer 8
-
HK$17,791 HKD
View
B
Retailer 9
-
HK$18,026 HKD
View
B
Retailer 10
-
HK$18,402 HKD
View
B
Retailer 11
-
HK$21,028 HKD
View
Most Expensive
B
MOH London
AEE3F3158 · Nov 4
HK$29,602 HKD
£2,974 GBP
View
11 more retailers have this diamond
Prices start from HK$12,540 HKDSave up to HK$17,062 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$12,540 HKD