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Oval|Natural|GIA

1.50ct E SI1 Oval Natural Diamond

ID • E/SI1 • GIA 1553391703

Certificate GIA 1553391703

Diamond specifications and retailer prices

From $9,150 AUD
$6,428 USD
As of October 26, 2026
Save $10,741 AUD (54%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $19,891 AUD at NZ Jewellers · As of October 23, 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 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 1553391703. Listed at 12 retailers as of October 23, 2026, with prices from $9,150 to $19,891, a $10,741 spread on the same certified stone. NZ Jewellers lists it at $19,891. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1553391703
Dimensions6.31 × 8.66 × 4.08 mm
L/W Ratio1.37
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Needle
Top View
6.31 mm8.66 mm1.50 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1553391703
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 64.6%

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: Oct 26
Current: $19,891 AUD|Low: $9,010 AUD|High: $19,891 AUD|Avg: $11,915 AUD
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
October 26, 2026
Retailer 14$9,010 AUD
Retailer 15$9,150 AUD
Retailer 12$9,655 AUD
Retailer 3$9,945 AUD
Retailer 4$10,419 AUD
Retailer 6$10,534 AUD
Retailer 8$10,774 AUD
Retailer 10$10,940 AUD
Retailer 9$11,141 AUD
Retailer 5$12,087 AUD
Retailer 13$12,432 AUD
Retailer 2$12,925 AUD
Retailer 7$13,493 AUD
Retailer 11$16,597 AUD
NZ Jewellers$19,891 AUD

25 data points across 15 retailers

12 retailers$9,150 AUD to $19,891 AUD

A
Retailer 1
-
$9,010 AUD
$6,330 USD
Price last confirmed 8 days ago
A
Retailer 2
-
$9,150 AUD
$6,428 USD
View
A
Retailer 3
-
$9,655 AUD
$6,783 USD
View
A
Retailer 4
-
$10,419 AUD
$7,320 USD
View
A
Retailer 5
-
$10,774 AUD
$7,569 USD
View
A
Retailer 6
-
$10,940 AUD
$7,686 USD
View
A
Retailer 7
-
$11,141 AUD
£6,163 GBP
View
B+
Retailer 8
-
$12,087 AUD
$8,492 USD
View
B+
Retailer 9
-
$12,432 AUD
$8,734 USD
View
B+
Retailer 10
-
$12,925 AUD
€8,648 EUR
View
B+
Retailer 11
-
$16,597 AUD
£9,181 GBP
View
Most Expensive
B
NZ Jewellers
d4ecb5a0-d0a0-4a68-8ea7-528204860501 · Oct 23
$19,891 AUD
$13,974 USD
View
11 more retailers have this diamond
Prices start from $9,150 AUDSave up to $10,741 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
$9,150 AUD