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Round|Natural|IGI

4.23ct N SI2 Round Natural Diamond

EX • N/SI2 • IGI 807645925

Shape and cutting style on the report: Round brilliant

Certificate IGI 807645925

Diamond specifications and retailer prices

From $15,518 AUD
As of November 4, 2026
Save $117 AUD (1%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $21,300 AUD at NZ Jewellers · As of September 1, 2026
View at NZ Jewellers

About this 4.23ct natural round diamond

This 4.23ct natural round sits in the three to five carat band, graded N colour (tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 807645925. Listed at 5 retailers as of November 4, 2026, with a relatively tight 1% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

4.23
Carat
N
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabIGI
CertificateIGI 807645925
Dimensions10.17 × 10.22 × 6.47 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
10.17 mm10.22 mm4.23 ctN / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 807645925
Side View
Table 56.0%Crown 36.5°Girdle: Slightly ThickPavilion 40.6°CuletDepth 63.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $15,518 AUD|Low: $14,108 AUD|High: $15,635 AUD|Avg: $15,155 AUD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 2$14,108 AUD
Retailer 1$15,518 AUD
Retailer 3$15,539 AUD
Retailer 4$15,635 AUD

2 data points across 4 retailers

5 retailers$15,518 AUD to $15,635 AUD

Retailer 1
-
$14,108 AUD
Price last confirmed 8 days ago
B+
Retailer 2
-
$15,518 AUD
View
B+
Retailer 3
-
$15,635 AUD
View
Retailer 4
-
$17,635 AUD
View
Price last confirmed 67 days ago
Most Expensive
NZ Jewellers
7d2153db-992c-47ad-918d-838457c0191c · Sep 1
$21,300 AUD
$14,911 USD
View
Price last confirmed 65 days ago
4 more retailers have this diamond
Prices start from $15,518 AUDSave up to $117 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+
4.23ct Round
$15,518 AUD