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Heart|Natural|GIA

1.21ct I SI2 Heart Natural Diamond

ID • I/SI2 • GIA 7531927035

Certificate GIA 7531927035

Diamond specifications and retailer prices

From $2,551 AUD
As of November 4, 2026
Save $4,277 AUD (63%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $6,829 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7531927035. Listed at 14 retailers as of November 4, 2026, with prices from $2,551 to $6,829, a $4,277 spread on the same certified stone. NZ Jewellers lists it at $6,829. 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
I
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.39°
OriginNatural
Grading LabGIA
CertificateGIA 7531927035
Dimensions6.67 × 7.46 × 4.13 mm
L/W Ratio1.12
Cert comments
Additional twinning wisps, clouds, pinpoints and surface graining are not shown.
Key to symbols
Twinning Wisp, Feather, Crystal, Needle
Top View
6.67 mm7.46 mm1.21 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7531927035
Side View
Table 56.0%Crown 35.39°Girdle: STK-VTKPavilionCulet: NoneDepth 55.3%

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 4
Current: $6,829 AUD|Low: $2,551 AUD|High: $6,829 AUD|Avg: $3,491 AUD|+5.4%
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
Retailer 14
November 6, 2026
Retailer 14$2,551 AUD
Retailer 4$2,583 AUD
Retailer 11$2,732 AUD
Retailer 2$2,752 AUD
Retailer 6$2,800 AUD
Retailer 12$2,800 AUD
Retailer 3$2,925 AUD
Retailer 5$2,928 AUD
Retailer 13$3,000 AUD
Retailer 7$3,040 AUD
Retailer 10$3,067 AUD
Retailer 9$3,230 AUD
Retailer 8$4,892 AUD
NZ Jewellers$6,829 AUD

33 data points across 14 retailers

14 retailers$2,551 AUD to $6,829 AUD

A
Cheapest Retailer
-
$2,551 AUD
A
Retailer 2
-
$2,583 AUD
View
Final sale: no returns
A
Retailer 3
-
$2,732 AUD
View
A
Retailer 4
-
$2,752 AUD
View
Retailer 5
-
$2,800 AUD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$2,800 AUD
View
A
Retailer 7
-
$2,925 AUD
View
A
Retailer 8
-
$2,928 AUD
View
A
Retailer 9
-
$3,000 AUD
View
A
Retailer 10
-
$3,040 AUD
View
A
Retailer 11
-
$3,067 AUD
View
B+
Retailer 12
-
$3,230 AUD
View
B
Retailer 13
-
$4,892 AUD
View
Most Expensive
B
NZ Jewellers
27a37495-7bb8-4783-99b6-022636c6302d · Nov 5
$6,829 AUD
$4,692 USD
View
13 more retailers have this diamond
Prices start from $2,551 AUDSave up to $4,277 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.

A
1.21ct Heart
$2,551 AUD