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Heart|Natural|GIA

1.21ct D SI2 Heart Natural Diamond

EX • D/SI2 • GIA 5513714880

Certificate GIA 5513714880

Diamond specifications and retailer prices

From $3,090 AUD
As of November 6, 2026
Save $3,813 AUD (55%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $8,182 AUD at NZ Jewellers · As of October 21, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5513714880. Listed at 15 retailers as of November 4, 2026, with a 123% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5513714880
Dimensions7.41 × 6.28 × 4.48 mm
L/W Ratio1.18
Top View
7.41 mm6.28 mm1.21 ctD / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 5513714880
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 60.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $8,182 AUD|Low: $2,727 AUD|High: $8,182 AUD|Avg: $4,551 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 10$3,090 AUD
Retailer 9$3,273 AUD
Retailer 2$3,484 AUD
Retailer 6$3,545 AUD
Retailer 8$3,708 AUD
Retailer 3$3,884 AUD
Retailer 7$4,091 AUD
Retailer 4$4,906 AUD
Retailer 5$6,903 AUD
NZ Jewellers$8,182 AUD

40 data points across 10 retailers

15 retailers$3,090 AUD to $6,903 AUD

A
Cheapest Retailer
-
$3,090 AUD
A
Retailer 2
-
$3,218 AUD
View
A
Retailer 3
-
$3,273 AUD
View
Final sale: no returns
B+
Retailer 4
-
$3,484 AUD
View
Retailer 5
-
$3,545 AUD
View
Price last confirmed 15 days ago
Retailer 6
-
$3,708 AUD
View
Price last confirmed 15 days ago
B+
Retailer 7
-
$3,755 AUD
View
B+
Retailer 8
-
$3,884 AUD
View
Retailer 9
-
$4,091 AUD
View
Price last confirmed 14 days ago
B+
Retailer 10
-
$4,104 AUD
View
B+
Retailer 11
-
$4,104 AUD
View
B+
Retailer 12
-
$4,250 AUD
View
B+
Retailer 13
-
$4,906 AUD
View
B
Retailer 14
-
$6,903 AUD
View
Most Expensive
NZ Jewellers
ff0732ba-771a-4a5c-ba29-80f813082d9a · Oct 21
$8,182 AUD
$5,622 USD
View
Price last confirmed 16 days ago
14 more retailers have this diamond
Prices start from $3,090 AUDSave up to $3,813 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
$3,090 AUD