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Round|Lab Grown|IGI

0.40ct F SI1 Round Lab Grown Diamond

VG • F/SI1 • IGI LG459129403

Shape and cutting style on the report: Round brilliant

Certificate IGI LG459129403

Diamond specifications and retailer prices

From $354 AUD
$248 USD
As of November 1, 2026
Save $1,404 AUD (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,758 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 0.4ct lab-grown round diamond

This 0.4ct lab-grown round sits in the sub-half-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG459129403 or 459129403. Listed at 10 retailers as of November 1, 2026, with prices from $354 to $1,758, a $1,404 spread on the same certified stone. MOH London lists it at $1,758. 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

0.40
Carat
F
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG459129403
Dimensions4.66 × 4.70 × 2.86 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
4.66 mm4.70 mm0.40 ctF / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG459129403
Side View
Table 61.5%Crown 37.2°Girdle: MED-STKPavilion 40°Culet: NoneDepth 61.0%

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 1
Current: $1,758 AUD|Low: $340 AUD|High: $1,780 AUD|Avg: $707 AUD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 5$354 AUD
Retailer 3$371 AUD
Retailer 8$411 AUD
Retailer 6$439 AUD
Retailer 9$591 AUD
Retailer 7$735 AUD
Retailer 2$832 AUD
Retailer 4$835 AUD
MOH London$1,758 AUD

40 data points across 9 retailers

10 retailers$354 AUD to $1,758 AUD

A
Cheapest Retailer
-
$354 AUD
$248 USD
A
Retailer 2
-
$371 AUD
$260 USD
View
B+
Retailer 3
-
$411 AUD
$288 USD
View
B+
Retailer 4
-
$439 AUD
$308 USD
View
Retailer 5
-
$439 AUD
$308 USD
View
Price last confirmed 8 days ago
B
Retailer 6
-
$735 AUD
$515 USD
View
B
Retailer 7
-
$832 AUD
£459 GBP
View
B
Retailer 8
-
$835 AUD
€557 EUR
View
B
Retailer 9
-
$1,411 AUD
$989 USD
View
Most Expensive
B
MOH London
LG459129403 · Nov 1
$1,758 AUD
£970 GBP
View
9 more retailers have this diamond
Prices start from $354 AUDSave up to $1,404 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
0.40ct Round
$354 AUD