CaratHunter
Plans
Oval|Natural|GIA

1.00ct J SI2 Oval Natural Diamond

EX • J/SI2 • GIA 2564190909

Certificate GIA 2564190909

Diamond specifications and retailer prices

From $2,199 NZD
As of November 4, 2026
Save $1,746 NZD (44%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,945 NZD 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 $2,199 to $3,945, a $1,746 spread on the same certified stone. Helzberg Diamonds lists it at $3,945. 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: $3,945 NZD|Low: $2,192 NZD|High: $4,862 NZD|Avg: $2,837 NZD|-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$2,199 NZD
Retailer 8$2,201 NZD
Retailer 11$2,237 NZD
Retailer 7$2,273 NZD
Retailer 12$2,394 NZD
Retailer 5$2,473 NZD
Retailer 2$2,482 NZD
Retailer 10$2,688 NZD
Retailer 3$3,105 NZD
Retailer 4$3,258 NZD
Retailer 6$3,646 NZD
Helzberg Diamonds$3,945 NZD

31 data points across 12 retailers

10 retailers$2,199 NZD to $3,945 NZD

A
Cheapest Retailer
-
$2,199 NZD
A
Retailer 2
-
$2,237 NZD
View
Retailer 3
-
$2,273 NZD
View
Price last confirmed 19 days ago
A
Retailer 4
-
$2,394 NZD
View
A
Retailer 5
-
$2,473 NZD
View
B+
Retailer 6
-
$2,482 NZD
View
A
Retailer 7
-
$2,688 NZD
View
B+
Retailer 8
-
$3,105 NZD
View
B+
Retailer 9
-
$3,646 NZD
View
Most Expensive
B
Helzberg Diamonds
XZRILMKHPGPGP · Nov 6
$3,945 NZD
$2,187 USD
View
9 more retailers have this diamond
Prices start from $2,199 NZDSave up to $1,746 NZD

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
$2,199 NZD