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Marquise|Lab Grown|IGI

0.40ct D FL Marquise Lab Grown Diamond

EX • D/FL • IGI LG834615758

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG834615758

Diamond specifications and retailer prices

From $242 USD
As of November 1, 2026
Save $1,165 USD (83%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,407 USD at MOH London · As of October 29, 2026
View at MOH London

About this 0.4ct lab-grown marquise diamond

This 0.4ct lab-grown marquise sits in the sub-half-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG834615758 or 834615758. Listed at 12 retailers as of October 29, 2026, with prices from $242 to $1,407, a $1,165 spread on the same certified stone. MOH London lists it at $1,407. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.40
Carat
D
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG834615758
Dimensions8.02 × 3.89 × 2.32 mm
L/W Ratio2.06
Girdle conditionFaceted
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
8.02 mm3.89 mm0.40 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG834615758
Side View
Table 63.0%Crown 34.2°Girdle: THN-STKPavilion 40°Culet: NoneDepth 59.6%

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 1
Current: $1,407 USD|Low: $242 USD|High: $1,407 USD|Avg: $697 USD|+17.0%
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 2, 2026
Retailer 11$242 USD
Retailer 4$286 USD
Retailer 5$297 USD
Retailer 10$470 USD
Retailer 3$473 USD
Retailer 2$611 USD
Retailer 6$634 USD
Retailer 8$697 USD
Retailer 13$739 USD
Retailer 7$1,016 USD
Retailer 9$1,200 USD
Retailer 12$1,289 USD
MOH London$1,407 USD

19 data points across 13 retailers

12 retailers$242 USD to $1,407 USD

A
Cheapest Retailer
-
$242 USD
A
Retailer 2
-
$286 USD
View
Final sale: no returns
Retailer 3
-
$293 USD
View
Price last confirmed 38 days ago
B+
Retailer 4
-
$470 USD
View
B+
Retailer 5
-
$611 USD
£481 GBP
View
B
Retailer 6
-
$627 USD
View
B
Retailer 7
-
$634 USD
ZAR 10,240 ZAR
View
B
Retailer 8
-
$739 USD
View
B
Retailer 9
-
$1,016 USD
CA$1,411 CAD
View
B
Retailer 10
-
$1,200 USD
View
B
Retailer 11
-
$1,289 USD
View
Most Expensive
B
MOH London
LG834615758 · Oct 29
$1,407 USD
£1,108 GBP
View
11 more retailers have this diamond
Prices start from $242 USDSave up to $1,165 USD

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 Marquise
$242 USD