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Heart|Natural|GIA

1.50ct I SI1 Heart Natural Diamond

ID • I/SI1 • GIA 5241019812

Certificate GIA 5241019812

Diamond specifications and retailer prices

From $4,228 AUD
HK$23,200 HKD
As of November 2, 2026
Save $5,458 AUD (56%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $11,362 AUD at NZ Jewellers · As of September 25, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5241019812. Listed at 14 retailers as of November 1, 2026, with a 129% 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
I
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5241019812
Dimensions6.52 × 7.77 × 4.94 mm
L/W Ratio1.19
Girdle conditionFaceted
Top View
6.52 mm7.77 mm1.50 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5241019812
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.5%

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 2
Current: $4,228 AUD|Low: $4,155 AUD|High: $10,192 AUD|Avg: $6,354 AUD|-6.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 1$4,228 AUD
Retailer 10$4,853 AUD
Retailer 7$5,084 AUD
Retailer 3$5,326 AUD
Retailer 5$5,430 AUD
Retailer 6$5,441 AUD
Retailer 12$5,595 AUD
Retailer 8$6,307 AUD
Retailer 4$6,762 AUD
Retailer 11$7,230 AUD
Retailer 2$8,945 AUD
Retailer 9$9,685 AUD

29 data points across 12 retailers

14 retailers$4,228 AUD to $9,685 AUD

A
Cheapest Retailer
-
$4,228 AUD
HK$23,200 HKD
A
Retailer 2
-
$4,853 AUD
€3,246 EUR
View
A
Retailer 3
-
$5,084 AUD
$3,571 USD
View
A
Retailer 4
-
$5,326 AUD
SGD 5,056 SGD
View
A
Retailer 5
-
$5,430 AUD
$3,814 USD
View
Final sale: no returns
A
Retailer 6
-
$5,441 AUD
£3,010 GBP
View
A
Retailer 7
-
$5,595 AUD
$3,930 USD
View
A
Retailer 8
-
$6,307 AUD
$4,430 USD
View
B+
Retailer 9
-
$6,540 AUD
View
Retailer 10
-
$6,762 AUD
View
Price last confirmed 23 days ago
B+
Retailer 11
-
$7,230 AUD
ZAR 82,049 ZAR
View
B+
Retailer 12
-
$8,945 AUD
$6,283 USD
View
B
Retailer 13
-
$9,685 AUD
£5,357 GBP
View
Most Expensive
NZ Jewellers
866873ad-59aa-4b49-ba40-dce63a4157de · Sep 25
$11,362 AUD
$7,981 USD
View
Price last confirmed 37 days ago
13 more retailers have this diamond
Prices start from $4,228 AUDSave up to $5,458 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
$4,228 AUD