Oval|Natural|GIA

1.50ct I SI1 Oval Natural Diamond

EX • I/SI1 • GIA 3545321774

Certificate GIA 3545321774

Diamond specifications and retailer prices

From $6,442 AUD
As of November 4, 2026
Save $6,621 AUD (51%) vs most expensive(unlock to see where)
30 retailers carry this diamond
Most expensive: $14,870 AUD at NZ Jewellers · As of September 19, 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 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 3545321774. Listed at 30 retailers as of November 4, 2026, with a 103% 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.07°
Pavilion angle39.73°
OriginNatural
Grading LabGIA
CertificateGIA 3545321774
Dimensions8.87 × 6.39 × 4.02 mm
L/W Ratio1.39
Top View
8.87 mm6.39 mm1.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3545321774
Side View
Table 60.0%Crown 40.07°Girdle: MED-THKPavilion 39.73°Culet: NoneDepth 62.8%

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 4
Current: $9,659 AUD|Low: $6,442 AUD|High: $13,256 AUD|Avg: $8,941 AUD|+2.2%
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 6, 2026
Retailer 8$6,442 AUD
Retailer 3$7,223 AUD
Retailer 12$7,434 AUD
Retailer 4$7,539 AUD
Retailer 9$8,054 AUD
Retailer 11$8,054 AUD
Retailer 5$8,446 AUD
Retailer 10$8,524 AUD
Retailer 2$8,834 AUD
Retailer 1$9,659 AUD
Retailer 6$10,847 AUD
Retailer 7$13,062 AUD

40 data points across 12 retailers

30 retailers$6,442 AUD to $13,062 AUD

A
Cheapest Retailer
-
$6,442 AUD
A
Retailer 2
-
$7,024 AUD
View
A
Retailer 3
-
$7,044 AUD
View
A
Retailer 4
-
$7,223 AUD
View
A
Retailer 5
-
$7,434 AUD
View
Final sale: no returns
A
Retailer 6
-
$7,539 AUD
View
B+
Retailer 7
-
$7,958 AUD
View
Retailer 8
-
$8,054 AUD
View
Price last confirmed 45 days ago
Retailer 9
-
$8,054 AUD
View
Price last confirmed 21 days ago
Retailer 10
-
$8,054 AUD
View
Price last confirmed 15 days ago
Retailer 11
-
$8,054 AUD
View
Price last confirmed 12 days ago
Retailer 12
-
$8,054 AUD
View
Price last confirmed 29 days ago
B+
Retailer 13
-
$8,054 AUD
View
B+
Retailer 14
-
$8,446 AUD
View
B+
Retailer 15
-
$8,524 AUD
View
B+
Retailer 16
-
$8,645 AUD
View
B+
Retailer 17
-
$8,645 AUD
View
Retailer 18
-
$8,834 AUD
View
Price last confirmed 33 days ago
B+
Retailer 19
-
$8,936 AUD
View
B+
Retailer 20
-
$9,112 AUD
View
Retailer 21
-
$9,294 AUD
View
Price last confirmed 45 days ago
Retailer 22
-
$9,294 AUD
View
Price last confirmed 16 days ago
B+
Retailer 23
-
$9,294 AUD
View
Retailer 24
-
$9,294 AUD
View
Price last confirmed 14 days ago
B+
Retailer 25
-
$9,659 AUD
View
B+
Retailer 26
-
$10,847 AUD
View
B
Retailer 27
-
$13,062 AUD
View
Retailer 28
-
$14,870 AUD
View
Price last confirmed 17 days ago
Retailer 29
-
$14,870 AUD
View
Price last confirmed 14 days ago
Most Expensive
NZ Jewellers
dfeb4df0-b816-4860-8afe-396cfdcda81c · Sep 19
$14,870 AUD
$10,217 USD
View
Price last confirmed 47 days ago
29 more retailers have this diamond
Prices start from $6,442 AUDSave up to $6,621 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
$6,442 AUD