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Heart|Natural|GIA

1.00ct I SI1 Heart Natural Diamond

GD • I/SI1 • GIA 6521239587

Certificate GIA 6521239587

Diamond specifications and retailer prices

From $2,535 AUD
As of November 6, 2026
Save $4,174 AUD (62%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $6,709 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6521239587. Listed at 26 retailers as of November 5, 2026, with prices from $2,535 to $6,709, a $4,174 spread on the same certified stone. NZ Jewellers lists it at $6,709. 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

1.00
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6521239587
Dimensions6.24 × 6.98 × 4.05 mm
L/W Ratio1.12
Top View
6.24 mm6.98 mm1.00 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6521239587
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 58.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $6,709 AUD|Low: $2,535 AUD|High: $6,709 AUD|Avg: $3,809 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 10$2,535 AUD
Retailer 3$2,601 AUD
Retailer 7$2,627 AUD
Retailer 8$2,805 AUD
Retailer 11$3,042 AUD
Retailer 2$3,113 AUD
Retailer 4$3,487 AUD
Retailer 5$3,916 AUD
Retailer 9$3,946 AUD
Retailer 6$5,608 AUD
NZ Jewellers$6,709 AUD

45 data points across 11 retailers

26 retailers$2,535 AUD to $6,709 AUD

B+
Cheapest Retailer
-
$2,535 AUD
Final sale: no returns
B+
Retailer 2
-
$2,601 AUD
View
B+
Retailer 3
-
$2,627 AUD
View
B+
Retailer 4
-
$2,636 AUD
View
B+
Retailer 5
-
$2,735 AUD
View
B+
Retailer 6
-
$2,805 AUD
View
Retailer 7
-
$2,908 AUD
View
Price last confirmed 9 days ago
B+
Retailer 8
-
$2,908 AUD
View
B+
Retailer 9
-
$2,962 AUD
View
B+
Retailer 10
-
$2,997 AUD
View
B
Retailer 11
-
$3,042 AUD
View
B+
Retailer 12
-
$3,113 AUD
View
B
Retailer 13
-
$3,144 AUD
View
B
Retailer 14
-
$3,196 AUD
View
B
Retailer 15
-
$3,353 AUD
View
B
Retailer 16
-
$3,355 AUD
View
B
Retailer 17
-
$3,377 AUD
View
B
Retailer 18
-
$3,377 AUD
View
B
Retailer 19
-
$3,487 AUD
View
B
Retailer 20
-
$3,493 AUD
View
B
Retailer 21
-
$3,697 AUD
View
B
Retailer 22
-
$3,877 AUD
View
B
Retailer 23
-
$3,916 AUD
View
Retailer 24
-
$3,946 AUD
View
Price last confirmed 32 days ago
B
Retailer 25
-
$5,608 AUD
View
Most Expensive
C
NZ Jewellers
a53fdac2-fe6d-4bc3-b8fa-f7d4f974edf7 · Nov 5
$6,709 AUD
$4,610 USD
View
25 more retailers have this diamond
Prices start from $2,535 AUDSave up to $4,174 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+
1.00ct Heart
$2,535 AUD