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Heart|Natural|GIA

1.21ct H SI2 Heart Natural Diamond

VG • H/SI2 • GIA 1156383057

Certificate GIA 1156383057

Diamond specifications and retailer prices

From $5,963 AUD
As of November 5, 2026
Save $2,016 AUD (25%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $12,765 AUD at NZ Jewellers · As of November 5, 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1156383057. Listed at 13 retailers as of November 5, 2026, with a 34% 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
H
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishGood
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1156383057
Dimensions6.37 × 7.84 × 3.82 mm
L/W Ratio1.23
Culet sizeNone
Top View
6.37 mm7.84 mm1.21 ctH / SI2
OriginNatural
CutVery Good
PolishGood
SymmetryGood
FluorescenceNone
CertificateGIA 1156383057
Side View
Table 66.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 48.8%

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 5
Current: $12,765 AUD|Low: $6,530 AUD|High: $12,765 AUD|Avg: $8,383 AUD
NZ Jewellers
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 4$6,530 AUD
Retailer 7$6,915 AUD
Retailer 8$6,915 AUD
Retailer 9$6,915 AUD
Retailer 2$7,498 AUD
Retailer 5$7,533 AUD
Retailer 11$7,898 AUD
Retailer 3$7,970 AUD
Retailer 10$7,979 AUD
Retailer 12$8,424 AUD
Retailer 13$9,082 AUD
Retailer 6$12,156 AUD
NZ Jewellers$12,765 AUD

41 data points across 13 retailers

13 retailers$5,963 AUD to $7,979 AUD

B
Cheapest Retailer
-
$5,963 AUD
B
Retailer 2
-
$6,030 AUD
View
B
Retailer 3
-
$6,530 AUD
View
Retailer 4
-
$6,915 AUD
View
Price last confirmed 8 days ago
C
Retailer 5
-
$6,915 AUD
View
C
Retailer 6
-
$6,915 AUD
View
B
Retailer 7
-
$7,498 AUD
View
C
Retailer 8
-
$7,533 AUD
View
C
Retailer 9
-
$7,898 AUD
View
C
Retailer 10
-
$7,979 AUD
View
Retailer 11
-
$8,424 AUD
View
Price last confirmed 14 days ago
Retailer 12
-
$12,156 AUD
View
Price under review
Most Expensive
NZ Jewellers
1bb0eaf2-3cf1-4bd8-af76-9583fc411974 · Nov 5
$12,765 AUD
$8,771 USD
View
Price under review
12 more retailers have this diamond
Prices start from $5,963 AUDSave up to $2,016 AUD

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
$5,963 AUD