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Heart|Natural|GIA

1.30ct D SI1 Heart Natural Diamond

EX • D/SI1 • GIA 6545763135

Certificate GIA 6545763135

Diamond specifications and retailer prices

From $3,401 AUD
As of November 3, 2026
Save $2,931 AUD (46%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $7,556 AUD at NZ Jewellers · As of September 20, 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 D 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 6545763135. Listed at 10 retailers as of November 2, 2026, with a 86% 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle41.77°
Pavilion angle40.66°
OriginNatural
Grading LabGIA
CertificateGIA 6545763135
Dimensions6.26 × 7.35 × 4.54 mm
L/W Ratio1.17
Top View
6.26 mm7.35 mm1.30 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6545763135
Side View
Table 62.0%Crown 41.77°GirdlePavilion 40.66°CuletDepth 61.8%

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 3
Current: $3,617 AUD|Low: $3,296 AUD|High: $6,408 AUD|Avg: $4,351 AUD|+0.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 4, 2026
Retailer 2$3,401 AUD
Retailer 3$3,525 AUD
Retailer 1$3,617 AUD
Retailer 5$4,449 AUD
Retailer 4$6,332 AUD

40 data points across 5 retailers

10 retailers$3,401 AUD to $6,332 AUD

A
Cheapest Retailer
-
$3,401 AUD
A
Retailer 2
-
$3,525 AUD
View
Retailer 3
-
$3,614 AUD
View
Price last confirmed 46 days ago
Retailer 4
-
$3,614 AUD
View
Price last confirmed 30 days ago
A
Retailer 5
-
$3,617 AUD
View
Retailer 6
-
$3,781 AUD
View
Price last confirmed 37 days ago
Retailer 7
-
$4,449 AUD
View
Price last confirmed 31 days ago
B+
Retailer 8
-
$6,332 AUD
View
Retailer 9
-
$7,556 AUD
View
Price last confirmed 39 days ago
Most Expensive
NZ Jewellers
736ffe81-7f74-4a02-8e83-7d04e610c633 · Sep 20
$7,556 AUD
$5,192 USD
View
Price last confirmed 47 days ago
9 more retailers have this diamond
Prices start from $3,401 AUDSave up to $2,931 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
$3,401 AUD