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Round|Natural|IGI

1.01ct J SI2 Round Natural Diamond

EX • J/SI2 • IGI 623457656

Shape and cutting style on the report: Round brilliant

Certificate IGI 623457656

Diamond specifications and retailer prices

From $1,664 AUD
$1,169 USD
As of October 31, 2026
Save $2,736 AUD (62%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $4,400 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.01ct natural round diamond

This 1.01ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 623457656. Listed at 15 retailers as of October 30, 2026, with prices from $1,664 to $4,400, a $2,736 spread on the same certified stone. NZ Jewellers lists it at $4,400. 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

1.01
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.4°
Pavilion angle40.3°
OriginNatural
Grading LabIGI
CertificateIGI 623457656
Dimensions6.40 × 6.36 × 3.93 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
6.40 mm6.36 mm1.01 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 623457656
Side View
Table 59.0%Crown 36.4°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 61.6%

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 31
Current: $4,400 AUD|Low: $1,526 AUD|High: $4,400 AUD|Avg: $2,191 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
November 1, 2026
Retailer 13$1,664 AUD
Retailer 11$1,715 AUD
Retailer 9$1,741 AUD
Retailer 3$1,804 AUD
Retailer 5$1,804 AUD
Retailer 14$1,873 AUD
Retailer 15$1,917 AUD
Retailer 12$1,933 AUD
Retailer 6$1,996 AUD
Retailer 4$2,081 AUD
Retailer 10$2,142 AUD
Retailer 7$2,147 AUD
Retailer 8$2,389 AUD
Retailer 2$3,305 AUD
NZ Jewellers$4,400 AUD

43 data points across 15 retailers

15 retailers$1,664 AUD to $4,400 AUD

A
Cheapest Retailer
-
$1,664 AUD
$1,169 USD
Final sale: no returns
Retailer 2
-
$1,715 AUD
$1,205 USD
View
Price last confirmed 10 days ago
A
Retailer 3
-
$1,728 AUD
$1,214 USD
View
A
Retailer 4
-
$1,741 AUD
£963 GBP
View
A
Retailer 5
-
$1,804 AUD
$1,267 USD
View
A
Retailer 6
-
$1,804 AUD
$1,267 USD
View
A
Retailer 7
-
$1,873 AUD
$1,316 USD
View
A
Retailer 8
-
$1,917 AUD
$1,347 USD
View
A
Retailer 9
-
$1,933 AUD
$1,358 USD
View
A
Retailer 10
-
$1,996 AUD
$1,402 USD
View
B+
Retailer 11
-
$2,081 AUD
$1,462 USD
View
B+
Retailer 12
-
$2,142 AUD
£1,185 GBP
View
B+
Retailer 13
-
$2,389 AUD
€1,598 EUR
View
B
Retailer 14
-
$3,305 AUD
£1,828 GBP
View
Most Expensive
B
NZ Jewellers
1f95bea9-c9c5-410d-9912-8116841d46d3 · Oct 30
$4,400 AUD
$3,091 USD
View
14 more retailers have this diamond
Prices start from $1,664 AUDSave up to $2,736 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
1.01ct Round
$1,664 AUD