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Round|Natural|IGI

1.23ct M SI2 Round Natural Diamond

VG • M/SI2 • IGI 204668082

Shape and cutting style on the report: Round brilliant

Certificate IGI 204668082

Diamond specifications and retailer prices

From $2,686 AUD
As of November 5, 2026
Save $1,103 AUD (29%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $6,215 AUD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.23ct natural round diamond

This 1.23ct natural round sits in the classic one-carat band, graded M colour (faint-tinted) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 204668082. Listed at 8 retailers as of November 2, 2026, with a 41% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
M
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishGood
SymmetryGood
FluorescenceNone
Crown angle35.5°
Pavilion angle42.2°
OriginNatural
Grading LabIGI
CertificateIGI 204668082
Dimensions6.73 × 6.75 × 4.30 mm
L/W Ratio1.00
Culet sizeChipped
Cert comments
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Top View
6.73 mm6.75 mm1.23 ctM / SI2
OriginNatural
CutVery Good
PolishGood
SymmetryGood
FluorescenceNone
CertificateIGI 204668082
Side View
Table 61.0%Crown 35.5°GirdlePavilion 42.2°Culet: CHIDepth 63.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $2,963 AUD|Low: $2,686 AUD|High: $3,811 AUD|Avg: $3,205 AUD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 3$2,686 AUD
Retailer 1$2,963 AUD
Retailer 4$2,973 AUD
Retailer 5$3,170 AUD
Retailer 6$3,583 AUD
Retailer 2$3,788 AUD

36 data points across 6 retailers

8 retailers$2,686 AUD to $3,788 AUD

B
Cheapest Retailer
-
$2,686 AUD
B
Retailer 2
-
$2,963 AUD
View
Retailer 3
-
$2,973 AUD
View
Price last confirmed 39 days ago
Retailer 4
-
$3,110 AUD
View
Price last confirmed 38 days ago
B
Retailer 5
-
$3,170 AUD
View
Retailer 6
-
$3,430 AUD
View
Price last confirmed 38 days ago
C
Retailer 7
-
$3,788 AUD
View
Most Expensive
NZ Jewellers
6a8ac142-d8f7-4b15-a8fd-29fdfb79c566 · Sep 28
$6,215 AUD
$4,351 USD
View
Price last confirmed 39 days ago
7 more retailers have this diamond
Prices start from $2,686 AUDSave up to $1,103 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.

B
1.23ct Round
$2,686 AUD