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Heart|Natural|GIA

1.21ct F SI1 Heart Natural Diamond

EX • F/SI1 • GIA 3145096740

Certificate GIA 3145096740

Diamond specifications and retailer prices

From HK$29,955 HKD
As of November 4, 2026
Save HK$29,020 HKD (49%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: HK$58,974 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3145096740. Listed at 5 retailers as of November 4, 2026, with prices from HK$29,955 to HK$58,974, a HK$29,020 spread on the same certified stone. MOH London lists it at HK$58,974. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 3145096740
Dimensions6.67 × 7.24 × 4.15 mm
L/W Ratio1.09
Top View
6.67 mm7.24 mm1.21 ctF / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceFaint
CertificateGIA 3145096740
Side View
Table 55.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 57.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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$58,974 HKD|Low: HK$35,974 HKD|High: HK$59,850 HKD|Avg: HK$43,731 HKD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 7, 2026
Retailer 4HK$35,974 HKD
Retailer 2HK$36,906 HKD
Retailer 3HK$41,781 HKD
MOH LondonHK$58,974 HKD

41 data points across 4 retailers

5 retailersHK$29,955 HKD to HK$58,974 HKD

B
Cheapest Retailer
-
HK$29,955 HKD
B
Retailer 2
-
HK$35,974 HKD
View
B
Retailer 3
-
HK$36,906 HKD
View
B
Retailer 4
-
HK$41,781 HKD
View
Most Expensive
B
MOH London
FF985070C · Nov 4
HK$58,974 HKD
£5,925 GBP
View
4 more retailers have this diamond
Prices start from HK$29,955 HKDSave up to HK$29,020 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.

B
1.21ct Heart
HK$29,955 HKD