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Heart|Natural|GIA

1.50ct D SI1 Heart Natural Diamond

EX • D/SI1 • GIA 6455572879

Certificate GIA 6455572879

Diamond specifications and retailer prices

From $5,855 AUD
$4,113 USD
As of October 31, 2026
Save $6,390 AUD (52%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $12,841 AUD at NZ Jewellers · As of October 24, 2026
View at NZ Jewellers

About this 1.5ct natural heart diamond

This 1.5ct natural heart sits in the one-and-a-half to two 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 6455572879. Listed at 13 retailers as of October 26, 2026, with a 109% 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

1.50
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6455572879
Dimensions6.52 × 7.89 × 4.84 mm
L/W Ratio1.21
Top View
6.52 mm7.89 mm1.50 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6455572879
Side View
Table 55.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 61.4%

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: Oct 31
Current: $12,841 AUD|Low: $5,351 AUD|High: $12,841 AUD|Avg: $8,112 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
October 27, 2026
Retailer 15$5,855 AUD
Retailer 18$5,887 AUD
Retailer 3$6,057 AUD
Retailer 16$6,420 AUD
Retailer 4$6,956 AUD
Retailer 12$6,956 AUD
Retailer 13$6,956 AUD
Retailer 11$7,276 AUD
Retailer 17$7,393 AUD
Retailer 6$7,873 AUD
Retailer 7$7,873 AUD
Retailer 2$8,103 AUD
Retailer 5$8,129 AUD
Retailer 9$8,718 AUD
Retailer 8$9,470 AUD
Retailer 10$10,777 AUD
Retailer 14$12,245 AUD
NZ Jewellers$12,841 AUD

39 data points across 18 retailers

13 retailers$5,855 AUD to $12,245 AUD

A
Cheapest Retailer
-
$5,855 AUD
$4,113 USD
A
Retailer 2
-
$5,887 AUD
$4,135 USD
View
A
Retailer 3
-
$6,057 AUD
$4,255 USD
View
Retailer 4
-
$6,956 AUD
$4,886 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$6,956 AUD
$4,886 USD
View
A
Retailer 6
-
$7,276 AUD
£4,024 GBP
View
A
Retailer 7
-
$7,393 AUD
$5,193 USD
View
A
Retailer 8
-
$7,873 AUD
$5,530 USD
View
A
Retailer 9
-
$7,873 AUD
$5,530 USD
View
B+
Retailer 10
-
$8,103 AUD
$5,692 USD
View
B+
Retailer 11
-
$8,129 AUD
$5,710 USD
View
B+
Retailer 12
-
$12,245 AUD
£6,773 GBP
View
Most Expensive
NZ Jewellers
f8a64e5f-cbaf-4ca0-8099-571045c50564 · Oct 24
$12,841 AUD
$9,020 USD
View
Price last confirmed 8 days ago
12 more retailers have this diamond
Prices start from $5,855 AUDSave up to $6,390 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
1.50ct Heart
$5,855 AUD