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Heart|Natural|GIA

1.21ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 2245042739

Certificate GIA 2245042739

Diamond specifications and retailer prices

From $2,346 AUD
As of November 6, 2026
Save $4,330 AUD (65%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,676 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2245042739. Listed at 12 retailers as of November 5, 2026, with prices from $2,346 to $6,676, a $4,330 spread on the same certified stone. NZ Jewellers lists it at $6,676. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Pavilion angle38.94°
OriginNatural
Grading LabGIA
CertificateGIA 2245042739
Dimensions6.61 × 7.21 × 4.29 mm
L/W Ratio1.09
Key to symbols
Twinning Wisp, Feather, Crystal, Needle
Top View
6.61 mm7.21 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 2245042739
Side View
Table 62.0%CrownGirdle: THK-VTKPavilion 38.94°Culet: NoneDepth 59.5%

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: $6,676 AUD|Low: $2,346 AUD|High: $7,133 AUD|Avg: $4,039 AUD|-6.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 10$2,346 AUD
Retailer 3$3,027 AUD
Retailer 4$3,097 AUD
Retailer 7$3,193 AUD
Retailer 6$3,263 AUD
Retailer 9$3,340 AUD
Retailer 8$3,510 AUD
Retailer 5$3,956 AUD
Retailer 11$4,874 AUD
Retailer 2$5,564 AUD
NZ Jewellers$6,676 AUD

38 data points across 11 retailers

12 retailers$2,346 AUD to $6,676 AUD

A
Cheapest Retailer
-
$2,346 AUD
B+
Retailer 2
-
$3,027 AUD
View
B+
Retailer 3
-
$3,097 AUD
View
B+
Retailer 4
-
$3,193 AUD
View
B+
Retailer 5
-
$3,263 AUD
View
B+
Retailer 6
-
$3,340 AUD
View
B+
Retailer 7
-
$3,510 AUD
View
B
Retailer 8
-
$3,592 AUD
View
B+
Retailer 9
-
$3,956 AUD
View
B
Retailer 10
-
$4,874 AUD
View
B
Retailer 11
-
$5,564 AUD
View
Most Expensive
B
NZ Jewellers
4f1787ab-5746-4b1c-9857-b23407ac4cfd · Nov 5
$6,676 AUD
$4,587 USD
View
11 more retailers have this diamond
Prices start from $2,346 AUDSave up to $4,330 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
$2,346 AUD