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Heart|Natural|GIA

1.21ct H SI1 Heart Natural Diamond

GD • H/SI1 • GIA 6137692565

Certificate GIA 6137692565

Diamond specifications and retailer prices

From HK$16,412 HKD
As of November 6, 2026
Save HK$8,559 HKD (34%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: HK$24,970 HKD at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

About this 1.21ct natural heart diamond

This 1.21ct natural heart sits in the classic one-carat band, graded H 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 6137692565. Listed at 4 retailers as of November 6, 2026, with prices from HK$16,412 to HK$24,970, a HK$8,559 spread on the same certified stone. 77 Diamonds lists it at HK$24,970. 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
H
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6137692565
Dimensions5.75 × 5.63 × 4.32 mm
L/W Ratio1.02
Top View
5.75 mm5.63 mm1.21 ctH / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 6137692565
Side View
Table 56.0%CrownGirdle: VTK-EXTPavilionCulet: NoneDepth 76.7%

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$24,970 HKD|Low: HK$16,412 HKD|High: HK$25,247 HKD|Avg: HK$20,915 HKD|+1.3%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 2HK$16,412 HKD
Retailer 3HK$18,183 HKD
Retailer 4HK$23,967 HKD
77 DiamondsHK$24,970 HKD

36 data points across 4 retailers

4 retailersHK$16,412 HKD to HK$24,970 HKD

B+
Cheapest Retailer
-
HK$16,412 HKD
B+
Retailer 2
-
HK$16,991 HKD
View
B+
Retailer 3
-
HK$17,814 HKD
View
Most Expensive
B
77 Diamonds
CUSMBK2MYAZFQ · Nov 6
HK$24,970 HKD
£2,509 GBP
View
3 more retailers have this diamond
Prices start from HK$16,412 HKDSave up to HK$8,559 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$16,412 HKD