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Oval|Natural|IGI

1.23ct J SI1 Oval Natural Diamond

VG • J/SI1 • IGI 747550042

Shape and cutting style on the report: Oval brilliant

Certificate IGI 747550042

Diamond specifications and retailer prices

From $2,398 AUD
As of November 7, 2026
Save $3,595 AUD (60%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $5,993 AUD at NZ Jewellers · As of November 7, 2026
View at NZ Jewellers

About this 1.23ct natural oval diamond

This 1.23ct natural oval sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 747550042. Listed at 8 retailers as of November 7, 2026, with prices from $2,398 to $5,993, a $3,595 spread on the same certified stone. NZ Jewellers lists it at $5,993. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.23
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.4°
Pavilion angle37.1°
OriginNatural
Grading LabIGI
CertificateIGI 747550042
Dimensions8.62 × 5.74 × 3.72 mm
L/W Ratio1.50
Girdle conditionFaceted
Culet sizePointed
Top View
8.62 mm5.74 mm1.23 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 747550042
Side View
Table 59.0%Crown 38.4°Girdle: MED-THKPavilion 37.1°Culet: NoneDepth 64.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 7
Current: $5,993 AUD|Low: $2,333 AUD|High: $6,137 AUD|Avg: $3,338 AUD|-2.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 7, 2026
Retailer 2$2,398 AUD
Retailer 6$2,406 AUD
Retailer 8$2,457 AUD
Retailer 5$2,460 AUD
Retailer 7$2,570 AUD
Retailer 3$2,628 AUD
Retailer 4$4,282 AUD
NZ Jewellers$5,993 AUD

41 data points across 8 retailers

8 retailers$2,398 AUD to $5,993 AUD

A
Cheapest Retailer
-
$2,398 AUD
A
Retailer 2
-
$2,406 AUD
View
A
Retailer 3
-
$2,457 AUD
View
A
Retailer 4
-
$2,460 AUD
View
A
Retailer 5
-
$2,570 AUD
View
B+
Retailer 6
-
$2,628 AUD
View
B
Retailer 7
-
$4,282 AUD
View
Most Expensive
B
NZ Jewellers
48134d25-d165-499f-b0b8-ebc2e96ba756 · Nov 7
$5,993 AUD
$4,118 USD
View
7 more retailers have this diamond
Prices start from $2,398 AUDSave up to $3,595 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
1.23ct Oval
$2,398 AUD