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Heart|Natural|GIA

1.00ct J SI2 Heart Natural Diamond

EX • J/SI2 • GIA 5316818821

Certificate GIA 5316818821

Diamond specifications and retailer prices

From $1,415 AUD
As of November 6, 2026
Save $3,192 AUD (69%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,606 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural heart diamond

This 1ct natural heart sits in the classic one-carat band, graded J 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 5316818821. Listed at 12 retailers as of November 5, 2026, with prices from $1,415 to $4,606, a $3,192 spread on the same certified stone. NZ Jewellers lists it at $4,606. 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

1.00
Carat
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5316818821
Dimensions5.75 × 6.77 × 4.21 mm
L/W Ratio1.18
Top View
5.75 mm6.77 mm1.00 ctJ / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceFaint
CertificateGIA 5316818821
Side View
Table 59.0%CrownGirdle: MED-XTKPavilionCulet: NoneDepth 62.1%

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: $4,606 AUD|Low: $1,415 AUD|High: $4,606 AUD|Avg: $2,388 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 6$1,415 AUD
Retailer 2$1,541 AUD
Retailer 10$1,744 AUD
Retailer 8$1,889 AUD
Retailer 9$1,960 AUD
Retailer 3$1,969 AUD
Retailer 4$2,155 AUD
Retailer 7$2,179 AUD
Retailer 5$3,448 AUD
NZ Jewellers$4,606 AUD

37 data points across 10 retailers

12 retailers$1,415 AUD to $4,606 AUD

A
Cheapest Retailer
-
$1,415 AUD
A
Retailer 2
-
$1,541 AUD
View
B+
Retailer 3
-
$1,744 AUD
View
Final sale: no returns
B+
Retailer 4
-
$1,767 AUD
View
B+
Retailer 5
-
$1,889 AUD
View
B+
Retailer 6
-
$1,960 AUD
View
B+
Retailer 7
-
$1,969 AUD
View
B+
Retailer 8
-
$2,122 AUD
View
B+
Retailer 9
-
$2,155 AUD
View
B+
Retailer 10
-
$2,179 AUD
View
B
Retailer 11
-
$3,448 AUD
View
Most Expensive
B
NZ Jewellers
5c2adc8f-68a6-44c7-b33f-9f01ab030d19 · Nov 5
$4,606 AUD
$3,165 USD
View
11 more retailers have this diamond
Prices start from $1,415 AUDSave up to $3,192 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
1.00ct Heart
$1,415 AUD