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Heart|Natural|GIA

1.21ct J SI1 Heart Natural Diamond

GD • J/SI1 • GIA 7458197631

Certificate GIA 7458197631

Diamond specifications and retailer prices

From HK$16,349 HKD
As of November 6, 2026
Save HK$15,273 HKD (48%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$31,622 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 7458197631. Listed at 12 retailers as of November 4, 2026, with prices from HK$16,349 to HK$31,622, a HK$15,273 spread on the same certified stone. MOH London lists it at HK$31,622. 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
J
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7458197631
Dimensions6.47 × 5.84 × 3.91 mm
L/W Ratio1.11
Top View
6.47 mm5.84 mm1.21 ctJ / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 7458197631
Side View
Table 65.0%CrownGirdle: ThickPavilionCulet: NoneDepth 67.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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$31,622 HKD|Low: HK$13,621 HKD|High: HK$32,090 HKD|Avg: HK$20,626 HKD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7HK$16,349 HKD
Retailer 2HK$16,545 HKD
Retailer 9HK$17,548 HKD
Retailer 6HK$18,104 HKD
Retailer 5HK$18,136 HKD
Retailer 4HK$22,086 HKD
Retailer 3HK$22,258 HKD
Retailer 8HK$22,360 HKD
MOH LondonHK$31,622 HKD

37 data points across 9 retailers

12 retailersHK$16,349 HKD to HK$31,622 HKD

B+
Cheapest Retailer
-
HK$16,349 HKD
B+
Retailer 2
-
HK$16,545 HKD
View
Final sale: no returns
B
Retailer 3
-
HK$17,548 HKD
View
B
Retailer 4
-
HK$18,104 HKD
View
B
Retailer 5
-
HK$18,136 HKD
View
B
Retailer 6
-
HK$18,253 HKD
View
B
Retailer 7
-
HK$19,186 HKD
View
B
Retailer 8
-
HK$19,852 HKD
View
B
Retailer 9
-
HK$22,086 HKD
View
B
Retailer 10
-
HK$22,258 HKD
View
Retailer 11
-
HK$22,360 HKD
View
Price last confirmed 34 days ago
Most Expensive
C
MOH London
CA0DCDDA5 · Nov 4
HK$31,622 HKD
£3,177 GBP
View
11 more retailers have this diamond
Prices start from HK$16,349 HKDSave up to HK$15,273 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$16,349 HKD