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Oval|Natural|GIA

1.50ct H SI1 Oval Natural Diamond

EX • H/SI1 • GIA 1555376298

Certificate GIA 1555376298

Diamond specifications and retailer prices

From $6,592 AUD
As of November 3, 2026
Save $7,178 AUD (52%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $15,804 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 H 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 1555376298. Listed at 20 retailers as of November 2, 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1555376298
Dimensions8.64 × 6.26 × 3.97 mm
L/W Ratio1.38
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Feather, Crystal, Indented Natural, Needle
Top View
8.64 mm6.26 mm1.50 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1555376298
Side View
Table 60.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 63.4%

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: Nov 3
Current: $8,878 AUD|Low: $6,592 AUD|High: $14,090 AUD|Avg: $9,082 AUD|-3.0%
Retailer 1
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
November 4, 2026
Retailer 4$6,592 AUD
Retailer 5$7,076 AUD
Retailer 2$7,510 AUD
Retailer 10$7,815 AUD
Retailer 16$7,903 AUD
Retailer 15$8,357 AUD
Retailer 14$8,440 AUD
Retailer 12$8,807 AUD
Retailer 1$8,878 AUD
Retailer 7$8,965 AUD
Retailer 9$9,200 AUD
Retailer 8$9,341 AUD
Retailer 3$9,574 AUD
Retailer 6$10,479 AUD
Retailer 13$11,483 AUD
Retailer 11$13,770 AUD

27 data points across 16 retailers

20 retailers$6,592 AUD to $13,770 AUD

A
Cheapest Retailer
-
$6,592 AUD
A
Retailer 2
-
$7,076 AUD
View
A
Retailer 3
-
$7,510 AUD
View
B+
Retailer 4
-
$7,815 AUD
View
Final sale: no returns
B+
Retailer 5
-
$7,903 AUD
View
B+
Retailer 6
-
$8,357 AUD
View
B+
Retailer 7
-
$8,440 AUD
View
Retailer 8
-
$8,561 AUD
View
Price last confirmed 48 days ago
B+
Retailer 9
-
$8,807 AUD
View
B+
Retailer 10
-
$8,878 AUD
View
B+
Retailer 11
-
$8,919 AUD
View
Retailer 12
-
$8,965 AUD
View
Price last confirmed 22 days ago
B+
Retailer 13
-
$9,200 AUD
View
Retailer 14
-
$9,341 AUD
View
Price last confirmed 28 days ago
B+
Retailer 15
-
$9,574 AUD
View
Retailer 16
-
$9,878 AUD
View
Price last confirmed 48 days ago
B+
Retailer 17
-
$10,479 AUD
View
B+
Retailer 18
-
$11,483 AUD
View
B
Retailer 19
-
$13,770 AUD
View
Most Expensive
NZ Jewellers
066f5159-0628-47f0-b3b5-85d10d42868f · Sep 19
$15,804 AUD
$10,859 USD
View
Price last confirmed 47 days ago
19 more retailers have this diamond
Prices start from $6,592 AUDSave up to $7,178 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
$6,592 AUD