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Oval|Natural|GIA

1.00ct J SI2 Oval Natural Diamond

EX • J/SI2 • GIA 2564190909

Certificate GIA 2564190909

Diamond specifications and retailer prices

From $1,774 AUD
As of November 4, 2026
Save $1,409 AUD (44%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,183 AUD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1ct natural oval diamond

This 1ct natural oval sits in the classic one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2564190909. Listed at 10 retailers as of November 4, 2026, with prices from $1,774 to $3,183, a $1,409 spread on the same certified stone. Helzberg Diamonds lists it at $3,183. 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

1.00
Carat
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle40.15°
Pavilion angle39.64°
OriginNatural
Grading LabGIA
CertificateGIA 2564190909
Dimensions7.78 × 5.58 × 3.47 mm
L/W Ratio1.39
Culet sizeNone
Top View
7.78 mm5.58 mm1.00 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2564190909
Side View
Table 60.0%Crown 40.15°Girdle: MED-THKPavilion 39.64°Culet: NoneDepth 62.1%

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 4
Current: $3,183 AUD|Low: $1,768 AUD|High: $3,922 AUD|Avg: $2,289 AUD|-2.9%
Helzberg Diamonds
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 9$1,774 AUD
Retailer 8$1,776 AUD
Retailer 11$1,805 AUD
Retailer 7$1,834 AUD
Retailer 12$1,931 AUD
Retailer 5$1,995 AUD
Retailer 2$2,003 AUD
Retailer 10$2,169 AUD
Retailer 3$2,505 AUD
Retailer 4$2,628 AUD
Retailer 6$2,941 AUD
Helzberg Diamonds$3,183 AUD

31 data points across 12 retailers

10 retailers$1,774 AUD to $3,183 AUD

A
Cheapest Retailer
-
$1,774 AUD
A
Retailer 2
-
$1,805 AUD
View
Retailer 3
-
$1,834 AUD
View
Price last confirmed 19 days ago
A
Retailer 4
-
$1,931 AUD
View
A
Retailer 5
-
$1,995 AUD
View
B+
Retailer 6
-
$2,003 AUD
View
A
Retailer 7
-
$2,169 AUD
View
B+
Retailer 8
-
$2,505 AUD
View
B+
Retailer 9
-
$2,941 AUD
View
Most Expensive
B
Helzberg Diamonds
XZRILMKHPGPGP · Nov 6
$3,183 AUD
$2,187 USD
View
9 more retailers have this diamond
Prices start from $1,774 AUDSave up to $1,409 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
1.00ct Oval
$1,774 AUD