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Round|Lab Grown|IGI

1.40ct I SI2 Round Lab Grown Diamond

ID • I/SI2 • IGI LG451056203

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451056203

Diamond specifications and retailer prices

From $1,006 AUD
As of November 5, 2026
Save $3,577 AUD (78%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,583 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 1.4ct lab-grown round diamond

This 1.4ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451056203 or 451056203. Listed at 10 retailers as of November 1, 2026, with prices from $1,006 to $4,583, a $3,577 spread on the same certified stone. MOH London lists it at $4,583. 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

1.40
Carat
I
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451056203
Dimensions7.23 × 7.19 × 4.44 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.23 mm7.19 mm1.40 ctI / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451056203
Side View
Table 55.0%Crown 35.2°Girdle: THN-MEDPavilion 40.4°Culet: NoneDepth 61.7%

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: $4,583 AUD|Low: $966 AUD|High: $4,639 AUD|Avg: $1,999 AUD
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 1, 2026
Retailer 6$1,006 AUD
Retailer 9$1,094 AUD
Retailer 11$1,126 AUD
Retailer 2$1,129 AUD
Retailer 7$1,167 AUD
Retailer 12$1,167 AUD
Retailer 3$1,864 AUD
Retailer 8$1,894 AUD
Retailer 4$2,611 AUD
Retailer 5$2,874 AUD
Retailer 10$3,281 AUD
MOH London$4,583 AUD

17 data points across 12 retailers

10 retailers$1,006 AUD to $4,583 AUD

A
Cheapest Retailer
-
$1,006 AUD
A
Retailer 2
-
$1,094 AUD
View
A
Retailer 3
-
$1,126 AUD
View
Final sale: no returns
A
Retailer 4
-
$1,129 AUD
View
A
Retailer 5
-
$1,167 AUD
View
Retailer 6
-
$1,167 AUD
View
Price last confirmed 25 days ago
B
Retailer 7
-
$1,894 AUD
View
B
Retailer 8
-
$2,874 AUD
View
B
Retailer 9
-
$3,281 AUD
View
Most Expensive
B
MOH London
LG451056203 · Nov 1
$4,583 AUD
£2,526 GBP
View
9 more retailers have this diamond
Prices start from $1,006 AUDSave up to $3,577 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
1.40ct Round
$1,006 AUD