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Heart|Natural|GIA

1.50ct E SI1 Heart Natural Diamond

EX • E/SI1 • GIA 3405997435

Certificate GIA 3405997435

Diamond specifications and retailer prices

From $10,879 AUD
As of November 5, 2026
Save $7,246 AUD (40%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $21,812 AUD at NZ Jewellers · As of September 21, 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 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 3405997435. Listed at 18 retailers as of November 4, 2026, with a 67% 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 3405997435
Dimensions7.11 × 7.80 × 4.37 mm
L/W Ratio1.10
Top View
7.11 mm7.80 mm1.50 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 3405997435
Side View
Table 63.0%CrownGirdle: THN-ETKPavilionCulet: NoneDepth 56.0%

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 5
Current: $12,135 AUD|Low: $10,907 AUD|High: $18,395 AUD|Avg: $13,614 AUD|-1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 7$10,907 AUD
Retailer 4$12,041 AUD
Retailer 1$12,135 AUD
Retailer 6$12,367 AUD
Retailer 2$14,171 AUD
Retailer 3$15,910 AUD
Retailer 5$18,126 AUD

39 data points across 7 retailers

18 retailers$10,879 AUD to $18,126 AUD

B+
Cheapest Retailer
-
$10,879 AUD
B+
Retailer 2
-
$10,997 AUD
View
B+
Retailer 3
-
$11,618 AUD
View
Retailer 4
-
$11,815 AUD
View
Price last confirmed 45 days ago
B+
Retailer 5
-
$12,041 AUD
View
B+
Retailer 6
-
$12,135 AUD
View
Retailer 7
-
$12,367 AUD
View
Price last confirmed 14 days ago
B+
Retailer 8
-
$12,505 AUD
View
B+
Retailer 9
-
$12,982 AUD
View
B+
Retailer 10
-
$12,982 AUD
View
B
Retailer 11
-
$13,190 AUD
View
B
Retailer 12
-
$13,419 AUD
View
Retailer 13
-
$13,633 AUD
View
Price last confirmed 45 days ago
B
Retailer 14
-
$14,171 AUD
View
Retailer 15
-
$14,362 AUD
View
Price last confirmed 14 days ago
B
Retailer 16
-
$15,910 AUD
View
B
Retailer 17
-
$18,126 AUD
View
Most Expensive
NZ Jewellers
c666509a-1e21-4e51-8e74-5e21d6c45247 · Sep 21
$21,812 AUD
$14,987 USD
View
Price last confirmed 46 days ago
17 more retailers have this diamond
Prices start from $10,879 AUDSave up to $7,246 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+
1.50ct Heart
$10,879 AUD