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Heart|Natural|GIA

1.21ct D SI1 Heart Natural Diamond

VG • D/SI1 • GIA 6542139244

Certificate GIA 6542139244

Diamond specifications and retailer prices

From HK$16,866 HKD
As of November 6, 2026
Save HK$20,895 HKD (55%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$47,338 HKD at NZ Jewellers · As of September 25, 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 D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6542139244. Listed at 16 retailers as of November 4, 2026, with a 124% 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
D
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6542139244
Dimensions6.43 × 7.26 × 4.15 mm
L/W Ratio1.13
Top View
6.43 mm7.26 mm1.21 ctD / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6542139244
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 57.2%

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$16,866 HKD|Low: HK$15,832 HKD|High: HK$38,975 HKD|Avg: HK$23,128 HKD|+0.3%
Retailer 1
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 1HK$16,866 HKD
Retailer 3HK$17,948 HKD
Retailer 9HK$20,025 HKD
Retailer 4HK$20,283 HKD
Retailer 13HK$21,702 HKD
Retailer 11HK$22,141 HKD
Retailer 12HK$23,755 HKD
Retailer 6HK$23,967 HKD
Retailer 10HK$24,210 HKD
Retailer 5HK$24,625 HKD
Retailer 2HK$25,863 HKD
Retailer 7HK$27,635 HKD
Retailer 8HK$37,761 HKD

39 data points across 13 retailers

16 retailersHK$16,866 HKD to HK$37,761 HKD

A
Cheapest Retailer
-
HK$16,866 HKD
A
Retailer 2
-
HK$17,948 HKD
View
Final sale: no returns
B+
Retailer 3
-
HK$20,025 HKD
View
B+
Retailer 4
-
HK$20,283 HKD
View
B+
Retailer 5
-
HK$21,702 HKD
View
B+
Retailer 6
-
HK$22,141 HKD
View
Retailer 7
-
HK$22,642 HKD
View
Price last confirmed 43 days ago
B+
Retailer 8
-
HK$23,755 HKD
View
B+
Retailer 9
-
HK$23,967 HKD
View
B+
Retailer 10
-
HK$24,210 HKD
View
Retailer 11
-
HK$24,625 HKD
View
Price last confirmed 31 days ago
B
Retailer 12
-
HK$25,863 HKD
View
Retailer 13
-
HK$26,122 HKD
View
Price last confirmed 44 days ago
B+
Retailer 14
-
HK$27,635 HKD
View
B
Retailer 15
-
HK$37,761 HKD
View
Most Expensive
NZ Jewellers
c27b58b6-618b-44f8-bf85-af67dd7fc74f · Sep 25
HK$47,338 HKD
$6,040 USD
View
Price last confirmed 42 days ago
15 more retailers have this diamond
Prices start from HK$16,866 HKDSave up to HK$20,895 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$16,866 HKD