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Heart|Natural|GIA

1.30ct E SI1 Heart Natural Diamond

ID • E/SI1 • GIA 6535974501

Certificate GIA 6535974501

Diamond specifications and retailer prices

From $3,628 AUD
As of November 6, 2026
Save $4,164 AUD (53%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $8,063 AUD at NZ Jewellers · As of October 21, 2026
View at NZ Jewellers

About this 1.3ct natural heart diamond

This 1.3ct natural heart sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6535974501. Listed at 12 retailers as of November 4, 2026, with a 115% 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

1.30
Carat
E
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 6535974501
Dimensions7.51 × 6.23 × 4.53 mm
L/W Ratio1.21
Top View
7.51 mm6.23 mm1.30 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6535974501
Side View
Table 63.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 60.4%

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: $8,063 AUD|Low: $4,149 AUD|High: $8,063 AUD|Avg: $5,487 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 9$4,149 AUD
Retailer 7$4,193 AUD
Retailer 8$4,355 AUD
Retailer 2$4,532 AUD
Retailer 6$4,838 AUD
Retailer 3$5,437 AUD
Retailer 4$5,702 AUD
Retailer 5$7,792 AUD
NZ Jewellers$8,063 AUD

42 data points across 9 retailers

12 retailers$3,628 AUD to $7,792 AUD

A
Cheapest Retailer
-
$3,628 AUD
A
Retailer 2
-
$4,149 AUD
View
Final sale: no returns
Retailer 3
-
$4,193 AUD
View
Price last confirmed 15 days ago
Retailer 4
-
$4,355 AUD
View
Price last confirmed 15 days ago
A
Retailer 5
-
$4,439 AUD
View
A
Retailer 6
-
$4,532 AUD
View
Retailer 7
-
$4,838 AUD
View
Price last confirmed 14 days ago
A
Retailer 8
-
$5,207 AUD
View
A
Retailer 9
-
$5,437 AUD
View
A
Retailer 10
-
$5,702 AUD
View
B+
Retailer 11
-
$7,792 AUD
View
Most Expensive
NZ Jewellers
9ddade04-e491-4c1b-bd7f-a420b3dcfc88 · Oct 21
$8,063 AUD
$5,540 USD
View
Price last confirmed 16 days ago
11 more retailers have this diamond
Prices start from $3,628 AUDSave up to $4,164 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
1.30ct Heart
$3,628 AUD