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Round|Lab Grown|IGI

1.23ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG685550014

Shape and cutting style on the report: Round brilliant

Certificate IGI LG685550014

Diamond specifications and retailer prices

From $226 AUD
As of November 5, 2026
Save $1,081 AUD (83%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,306 AUD at MOH London · As of November 4, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG685550014 or 685550014. Listed at 18 retailers as of November 4, 2026, with prices from $226 to $1,306, a $1,081 spread on the same certified stone. MOH London lists it at $1,306. 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
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685550014
Dimensions6.94 × 6.90 × 4.21 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.94 mm6.90 mm1.23 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685550014
Side View
Table 58.0%Crown 33.4°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 60.8%

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: $1,306 AUD|Low: $217 AUD|High: $1,390 AUD|Avg: $581 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
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 6, 2026
Retailer 14$226 AUD
Retailer 7$251 AUD
Retailer 6$261 AUD
Retailer 16$280 AUD
Retailer 17$280 AUD
Retailer 8$374 AUD
Retailer 2$481 AUD
Retailer 10$486 AUD
Retailer 5$549 AUD
Retailer 4$554 AUD
Retailer 13$684 AUD
Retailer 11$693 AUD
Retailer 12$731 AUD
Retailer 15$829 AUD
Retailer 9$900 AUD
Retailer 3$979 AUD
MOH London$1,306 AUD

44 data points across 17 retailers

18 retailers$226 AUD to $1,306 AUD

A
Cheapest Retailer
-
$226 AUD
A
Retailer 2
-
$251 AUD
View
Final sale: no returns
A
Retailer 3
-
$261 AUD
View
A
Retailer 4
-
$280 AUD
View
Retailer 5
-
$280 AUD
View
Price last confirmed 12 days ago
B+
Retailer 6
-
$374 AUD
View
A
Retailer 7
-
$481 AUD
View
A
Retailer 8
-
$486 AUD
View
A
Retailer 9
-
$549 AUD
View
B+
Retailer 10
-
$684 AUD
View
Retailer 11
-
$686 AUD
View
Price last confirmed 16 days ago
B+
Retailer 12
-
$693 AUD
View
B+
Retailer 13
-
$731 AUD
View
B+
Retailer 14
-
$746 AUD
View
B+
Retailer 15
-
$829 AUD
View
B
Retailer 16
-
$900 AUD
View
B
Retailer 17
-
$979 AUD
View
Most Expensive
B
MOH London
LG685550014 · Nov 4
$1,306 AUD
£720 GBP
View
17 more retailers have this diamond
Prices start from $226 AUDSave up to $1,081 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
$226 AUD