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Round|Lab Grown|IGI

1.33ct J SI1 Round Lab Grown Diamond

ID • J/SI1 • IGI LG492112687

Shape and cutting style on the report: Round brilliant

Certificate IGI LG492112687

Diamond specifications and retailer prices

From $900 AUD
As of November 5, 2026
Save $3,489 AUD (79%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,389 AUD at MOH London · As of November 5, 2026
View at MOH London

About this 1.33ct lab-grown round diamond

This 1.33ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG492112687 or 492112687. Listed at 12 retailers as of November 5, 2026, with prices from $900 to $4,389, a $3,489 spread on the same certified stone. MOH London lists it at $4,389. 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

1.33
Carat
J
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492112687
Dimensions7.05 × 7.01 × 4.37 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.05 mm7.01 mm1.33 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492112687
Side View
Table 54.5%Crown 34.7°Girdle: MediumPavilion 40.4°Culet: NoneDepth 62.1%

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 5
Current: $4,389 AUD|Low: $720 AUD|High: $4,452 AUD|Avg: $1,668 AUD|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 6$900 AUD
Retailer 9$1,009 AUD
Retailer 7$1,044 AUD
Retailer 10$1,044 AUD
Retailer 2$1,086 AUD
Retailer 11$1,141 AUD
Retailer 5$1,300 AUD
Retailer 3$1,707 AUD
Retailer 8$1,707 AUD
Retailer 4$2,668 AUD
MOH London$4,389 AUD

18 data points across 11 retailers

12 retailers$900 AUD to $4,389 AUD

A
Cheapest Retailer
-
$900 AUD
A
Retailer 2
-
$980 AUD
View
B+
Retailer 3
-
$1,009 AUD
View
Final sale: no returns
Retailer 4
-
$1,044 AUD
View
Price last confirmed 21 days ago
B+
Retailer 5
-
$1,044 AUD
View
B+
Retailer 6
-
$1,086 AUD
View
B+
Retailer 7
-
$1,141 AUD
View
B+
Retailer 8
-
$1,300 AUD
View
B
Retailer 9
-
$1,707 AUD
View
B
Retailer 10
-
$2,668 AUD
View
B
Retailer 11
-
$2,937 AUD
View
Most Expensive
B
MOH London
LG492112687 · Nov 5
$4,389 AUD
£2,419 GBP
View
11 more retailers have this diamond
Prices start from $900 AUDSave up to $3,489 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
1.33ct Round
$900 AUD