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Round|Lab Grown|IGI

1.23ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG729575214

Shape and cutting style on the report: Round brilliant

Certificate IGI LG729575214

Diamond specifications and retailer prices

From $229 AUD
As of November 5, 2026
Save $1,096 AUD (83%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,324 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 1.23ct lab-grown round diamond

This 1.23ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG729575214 or 729575214. Listed at 17 retailers as of November 1, 2026, with prices from $229 to $1,324, a $1,096 spread on the same certified stone. MOH London lists it at $1,324. 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

1.23
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG729575214
Dimensions6.88 × 6.85 × 4.24 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.88 mm6.85 mm1.23 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG729575214
Side View
Table 58.0%Crown 35°Girdle: MediumPavilion 40.9°Culet: NoneDepth 61.7%

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 5
Current: $1,324 AUD|Low: $217 AUD|High: $1,332 AUD|Avg: $610 AUD|+1.2%
MOH London
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
Retailer 16
Retailer 17
November 6, 2026
Retailer 4$229 AUD
Retailer 3$254 AUD
Retailer 13$264 AUD
Retailer 15$283 AUD
Retailer 16$283 AUD
Retailer 2$489 AUD
Retailer 11$494 AUD
Retailer 8$513 AUD
Retailer 14$543 AUD
Retailer 10$636 AUD
Retailer 12$666 AUD
Retailer 7$749 AUD
Retailer 9$814 AUD
Retailer 5$910 AUD
Retailer 17$961 AUD
Retailer 6$989 AUD
MOH London$1,324 AUD

46 data points across 17 retailers

17 retailers$229 AUD to $1,324 AUD

A
Cheapest Retailer
-
$229 AUD
A
Retailer 2
-
$254 AUD
View
Final sale: no returns
A
Retailer 3
-
$264 AUD
View
Retailer 4
-
$283 AUD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$283 AUD
View
A
Retailer 6
-
$489 AUD
View
A
Retailer 7
-
$494 AUD
View
B+
Retailer 8
-
$513 AUD
View
A
Retailer 9
-
$543 AUD
View
B+
Retailer 10
-
$636 AUD
View
B+
Retailer 11
-
$666 AUD
View
B+
Retailer 12
-
$749 AUD
View
B+
Retailer 13
-
$814 AUD
View
B
Retailer 14
-
$910 AUD
View
B
Retailer 15
-
$961 AUD
View
B
Retailer 16
-
$989 AUD
View
Most Expensive
B
MOH London
LG729575214 · Nov 1
$1,324 AUD
£730 GBP
View
16 more retailers have this diamond
Prices start from $229 AUDSave up to $1,096 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 Round
$229 AUD