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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 $346 CAD
$248 USD
As of October 29, 2026
Save $1,385 CAD (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,731 CAD at MOH London · As of October 29, 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 October 29, 2026, with prices from $346 to $1,731, a $1,385 spread on the same certified stone. MOH London lists it at $1,731. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $1,731 CAD|Low: $332 CAD|High: $1,742 CAD|Avg: $687 CAD|+0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 5$346 CAD
Retailer 3$363 CAD
Retailer 8$402 CAD
Retailer 6$430 CAD
Retailer 9$578 CAD
Retailer 7$719 CAD
Retailer 2$815 CAD
Retailer 4$817 CAD
MOH London$1,731 CAD

41 data points across 9 retailers

10 retailers$346 CAD to $1,731 CAD

A
Cheapest Retailer
-
$346 CAD
$248 USD
A
Retailer 2
-
$363 CAD
$260 USD
View
B+
Retailer 3
-
$402 CAD
$288 USD
View
B+
Retailer 4
-
$430 CAD
$308 USD
View
B+
Retailer 5
-
$430 CAD
$308 USD
View
B
Retailer 6
-
$719 CAD
$515 USD
View
B
Retailer 7
-
$815 CAD
£459 GBP
View
B
Retailer 8
-
$817 CAD
€557 EUR
View
B
Retailer 9
-
$1,382 CAD
$989 USD
View
Most Expensive
B
MOH London
LG459129403 · Oct 29
$1,731 CAD
£976 GBP
View
9 more retailers have this diamond
Prices start from $346 CADSave up to $1,385 CAD

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
$346 CAD