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Round|Lab Grown|IGI

1.23ct H VS1 Round Lab Grown Diamond

ID • H/VS1 • IGI LG818686333

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818686333

Diamond specifications and retailer prices

From $291 AUD
As of November 3, 2026
Save $1,395 AUD (83%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,685 AUD at MOH London · As of November 5, 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 H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG818686333 or 818686333. Listed at 16 retailers as of November 3, 2026, with prices from $291 to $1,685, a $1,395 spread on the same certified stone. MOH London lists it at $1,685. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818686333
Dimensions6.93 × 6.91 × 4.21 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.93 mm6.91 mm1.23 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818686333
Side View
Table 56.0%Crown 33.3°Girdle: MediumPavilion 40.9°Culet: NoneDepth 60.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 3
Current: $1,685 AUD|Low: $291 AUD|High: $1,709 AUD|Avg: $853 AUD|-1.3%
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
November 5, 2026
Retailer 10$291 AUD
Retailer 12$361 AUD
Retailer 4$604 AUD
Retailer 8$623 AUD
Retailer 13$626 AUD
Retailer 6$660 AUD
Retailer 2$734 AUD
Retailer 11$870 AUD
Retailer 9$882 AUD
Retailer 7$941 AUD
Retailer 5$1,237 AUD
Retailer 3$1,304 AUD
MOH London$1,685 AUD

28 data points across 13 retailers

16 retailers$291 AUD to $1,685 AUD

A
Cheapest Retailer
-
$291 AUD
A
Retailer 2
-
$338 AUD
View
Retailer 3
-
$361 AUD
View
Price last confirmed 11 days ago
A
Retailer 4
-
$361 AUD
View
A
Retailer 5
-
$604 AUD
View
A
Retailer 6
-
$623 AUD
View
A
Retailer 7
-
$626 AUD
View
B+
Retailer 8
-
$660 AUD
View
B+
Retailer 9
-
$734 AUD
View
B+
Retailer 10
-
$870 AUD
View
Retailer 11
-
$882 AUD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
$941 AUD
View
B
Retailer 13
-
$1,162 AUD
View
B
Retailer 14
-
$1,237 AUD
View
B
Retailer 15
-
$1,331 AUD
View
Most Expensive
B
MOH London
LG818686333 · Nov 5
$1,685 AUD
£931 GBP
View
15 more retailers have this diamond
Prices start from $291 AUDSave up to $1,395 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
$291 AUD