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Marquise|Lab Grown|IGI

4.05ct F SI1 Marquise Lab Grown Diamond

ID • F/SI1 • IGI LG650475156

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG650475156

Diamond specifications and retailer prices

From $512 USD
As of November 2, 2026
Save $2,138 USD (81%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,650 USD at MOH London · As of November 1, 2026
View at MOH London

About this 4.05ct lab-grown marquise diamond

This 4.05ct lab-grown marquise sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG650475156 or 650475156. Listed at 14 retailers as of November 1, 2026, with prices from $512 to $2,650, a $2,138 spread on the same certified stone. MOH London lists it at $2,650. 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

4.05
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG650475156
Dimensions16.73 × 8.25 × 5.23 mm
L/W Ratio2.03
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.73 mm8.25 mm4.05 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG650475156
Side View
Table 59.0%Crown 36.5°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 63.4%

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 2
Current: $2,650 USD|Low: $512 USD|High: $5,122 USD|Avg: $1,616 USD|-0.6%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 2, 2026
Retailer 12$512 USD
Retailer 2$548 USD
Retailer 5$574 USD
Retailer 13$635 USD
Retailer 16$704 USD
Retailer 14$775 USD
Retailer 15$967 USD
Retailer 10$984 USD
Retailer 4$986 USD
Retailer 3$1,167 USD
Retailer 7$1,346 USD
Retailer 11$1,639 USD
Retailer 17$1,670 USD
Retailer 6$2,610 USD
MOH London$2,650 USD
Retailer 8$3,990 USD
Retailer 9$5,122 USD

6 data points across 17 retailers

14 retailers$512 USD to $2,650 USD

A
Cheapest Retailer
-
$512 USD
A
Retailer 2
-
$548 USD
£431 GBP
View
A
Retailer 3
-
$574 USD
View
A
Retailer 4
-
$635 USD
View
A
Retailer 5
-
$704 USD
HK$5,500 HKD
View
A
Retailer 6
-
$775 USD
View
A
Retailer 7
-
$967 USD
View
A
Retailer 8
-
$984 USD
£774 GBP
View
B+
Retailer 9
-
$986 USD
View
B+
Retailer 10
-
$1,167 USD
View
B+
Retailer 11
-
$1,639 USD
View
B
Retailer 12
-
$1,670 USD
View
B
Retailer 13
-
$2,610 USD
View
Most Expensive
B
MOH London
LG650475156 · Nov 1
$2,650 USD
£2,087 GBP
View
13 more retailers have this diamond
Prices start from $512 USDSave up to $2,138 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
4.05ct Marquise
$512 USD