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Round|Lab Grown|IGI

1.23ct F SI1 Round Lab Grown Diamond

VG • F/SI1 • IGI LG741564265

Shape and cutting style on the report: Round brilliant

Certificate IGI LG741564265

Diamond specifications and retailer prices

From $221 AUD
As of November 1, 2026
Save $1,063 AUD (83%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,285 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 F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG741564265 or 741564265. Listed at 12 retailers as of November 1, 2026, with prices from $221 to $1,285, a $1,063 spread on the same certified stone. MOH London lists it at $1,285. 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
F
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG741564265
Dimensions6.88 × 6.80 × 4.19 mm
L/W Ratio1.01
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
6.88 mm6.80 mm1.23 ctF / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG741564265
Side View
Table 62.0%Crown 37.8°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.1%

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 1
Current: $1,285 AUD|Low: $221 AUD|High: $1,366 AUD|Avg: $622 AUD|-6.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 9$221 AUD
Retailer 10$247 AUD
Retailer 4$284 AUD
Retailer 7$477 AUD
Retailer 2$496 AUD
Retailer 3$504 AUD
Retailer 12$547 AUD
Retailer 11$642 AUD
Retailer 5$648 AUD
Retailer 6$736 AUD
Retailer 8$800 AUD
MOH London$1,285 AUD

37 data points across 12 retailers

12 retailers$221 AUD to $1,285 AUD

A
Cheapest Retailer
-
$221 AUD
A
Retailer 2
-
$247 AUD
View
Final sale: no returns
Retailer 3
-
$284 AUD
View
Price last confirmed 12 days ago
A
Retailer 4
-
$477 AUD
View
B+
Retailer 5
-
$496 AUD
View
B+
Retailer 6
-
$504 AUD
View
A
Retailer 7
-
$547 AUD
View
B+
Retailer 8
-
$642 AUD
View
B+
Retailer 9
-
$648 AUD
View
B
Retailer 10
-
$736 AUD
View
B
Retailer 11
-
$800 AUD
View
Most Expensive
B
MOH London
LG741564265 · Nov 1
$1,285 AUD
£695 GBP
View
11 more retailers have this diamond
Prices start from $221 AUDSave up to $1,063 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
$221 AUD