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Round|Lab Grown|IGI

1.23ct E SI2 Round Lab Grown Diamond

ID • E/SI2 • IGI LG488153826

Shape and cutting style on the report: Round brilliant

Certificate IGI LG488153826

Diamond specifications and retailer prices

From $337 AUD
$237 USD
As of October 30, 2026
Save $1,283 AUD (79%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,620 AUD at MOH London · As of October 29, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG488153826 or 488153826. Listed at 8 retailers as of October 29, 2026, with prices from $337 to $1,620, a $1,283 spread on the same certified stone. MOH London lists it at $1,620. 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
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG488153826
Dimensions6.87 × 6.84 × 4.20 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.87 mm6.84 mm1.23 ctE / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG488153826
Side View
Table 59.5%Crown 35.4°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.3%

Caratlytics Score

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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: Oct 30
Current: $1,620 AUD|Low: $245 AUD|High: $1,620 AUD|Avg: $717 AUD|+8.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 8$337 AUD
Retailer 6$345 AUD
Retailer 7$601 AUD
Retailer 2$627 AUD
Retailer 3$683 AUD
Retailer 4$683 AUD
Retailer 5$801 AUD
MOH London$1,620 AUD

39 data points across 8 retailers

8 retailers$337 AUD to $1,620 AUD

A
Cheapest Retailer
-
$337 AUD
$237 USD
Final sale: no returns
Retailer 2
-
$345 AUD
$242 USD
View
Price last confirmed 14 days ago
B+
Retailer 3
-
$601 AUD
$422 USD
View
B+
Retailer 4
-
$627 AUD
£347 GBP
View
B+
Retailer 5
-
$683 AUD
$480 USD
View
Retailer 6
-
$683 AUD
$480 USD
View
Price last confirmed 12 days ago
B+
Retailer 7
-
$801 AUD
$563 USD
View
Most Expensive
B
MOH London
LG488153826 · Oct 29
$1,620 AUD
£896 GBP
View
7 more retailers have this diamond
Prices start from $337 AUDSave up to $1,283 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
$337 AUD