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Oval|Natural|GIA

1.50ct J SI1 Oval Natural Diamond

EX • J/SI1 • GIA 1559595774

Certificate GIA 1559595774

Diamond specifications and retailer prices

From $4,975 AUD
HK$27,300 HKD
As of November 1, 2026
Save $6,615 AUD (57%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $11,719 AUD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1.5ct natural oval diamond

This 1.5ct natural oval sits in the one-and-a-half to two carat band, graded J 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 1559595774. Listed at 26 retailers as of October 30, 2026, with a 133% 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1559595774
Dimensions8.73 × 6.41 × 4.07 mm
L/W Ratio1.36
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Cloud, Needle, Indented Natural
Top View
8.73 mm6.41 mm1.50 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559595774
Side View
Table 61.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 63.6%

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 1
Current: $11,590 AUD|Low: $4,938 AUD|High: $11,719 AUD|Avg: $7,112 AUD|-1.1%
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
November 1, 2026
Retailer 16$4,975 AUD
Retailer 11$5,317 AUD
Retailer 2$5,936 AUD
Retailer 6$6,140 AUD
Retailer 17$6,285 AUD
Retailer 8$6,338 AUD
Retailer 12$6,401 AUD
Retailer 14$6,615 AUD
Retailer 5$6,652 AUD
Retailer 9$6,652 AUD
Retailer 10$6,652 AUD
Retailer 3$6,866 AUD
Retailer 4$7,044 AUD
Retailer 18$7,529 AUD
Retailer 7$7,676 AUD
Retailer 15$8,177 AUD
Retailer 13$10,597 AUD
NZ Jewellers$11,590 AUD

19 data points across 18 retailers

26 retailers$4,975 AUD to $11,590 AUD

A
Cheapest Retailer
-
$4,975 AUD
HK$27,300 HKD
A
Retailer 2
-
$5,317 AUD
₹355,726 INR
View
B+
Retailer 3
-
$5,929 AUD
SGD 5,628 SGD
View
B+
Retailer 4
-
$5,936 AUD
$4,170 USD
View
B+
Retailer 5
-
$6,140 AUD
$4,313 USD
View
Final sale: no returns
B+
Retailer 6
-
$6,164 AUD
$4,330 USD
View
B+
Retailer 7
-
$6,285 AUD
$4,415 USD
View
B+
Retailer 8
-
$6,338 AUD
SGD 6,016 SGD
View
B+
Retailer 9
-
$6,401 AUD
£3,540 GBP
View
B+
Retailer 10
-
$6,522 AUD
View
B+
Retailer 11
-
$6,615 AUD
£3,659 GBP
View
B+
Retailer 12
-
$6,652 AUD
$4,673 USD
View
B+
Retailer 13
-
$6,652 AUD
$4,673 USD
View
B+
Retailer 14
-
$6,652 AUD
$4,673 USD
View
Retailer 15
-
$6,727 AUD
$4,725 USD
View
Price last confirmed 16 days ago
Retailer 16
-
$6,727 AUD
$4,725 USD
View
Price last confirmed 14 days ago
Retailer 17
-
$6,820 AUD
View
Price last confirmed 23 days ago
B+
Retailer 18
-
$6,866 AUD
$4,823 USD
View
B+
Retailer 19
-
$7,044 AUD
$4,948 USD
View
B+
Retailer 20
-
$7,529 AUD
€5,037 EUR
View
B
Retailer 21
-
$7,676 AUD
$5,392 USD
View
Retailer 22
-
$7,761 AUD
$5,452 USD
View
Price last confirmed 14 days ago
B+
Retailer 23
-
$8,177 AUD
ZAR 92,795 ZAR
View
B
Retailer 24
-
$10,597 AUD
£5,861 GBP
View
B
Retailer 25
-
$11,590 AUD
$8,141 USD
View
Most Expensive
NZ Jewellers
abfc4749-cf77-454f-ace3-06e3f92758c4 · Oct 17
$11,719 AUD
$8,232 USD
View
Price last confirmed 15 days ago
25 more retailers have this diamond
Prices start from $4,975 AUDSave up to $6,615 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 Oval
$4,975 AUD