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Marquise|Lab Grown|IGI

4.00ct F SI1 Marquise Lab Grown Diamond

ID • F/SI1 • IGI LG778629621

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG778629621

Diamond specifications and retailer prices

From $750 USD
As of November 1, 2026
Save $1,314 USD (64%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $2,064 USD at MOH London · As of October 29, 2026
View at MOH London

About this 4ct lab-grown marquise diamond

This 4ct 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 LG778629621 or 778629621. Listed at 5 retailers as of October 29, 2026, with prices from $750 to $2,064, a $1,314 spread on the same certified stone. MOH London lists it at $2,064. 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

4.00
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778629621
Dimensions15.95 × 8.30 × 5.00 mm
L/W Ratio1.92
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.95 mm8.30 mm4.00 ctF / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778629621
Side View
Table 64.0%Crown 33.8°Girdle: MED-STKPavilion 39°Culet: NoneDepth 60.2%

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: $2,064 USD|Low: $750 USD|High: $2,078 USD|Avg: $1,159 USD|+0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 3$750 USD
Retailer 2$917 USD
Retailer 4$971 USD
Retailer 5$1,123 USD
MOH London$2,064 USD

39 data points across 5 retailers

5 retailers$750 USD to $2,064 USD

B+
Cheapest Retailer
-
$750 USD
A
Retailer 2
-
$917 USD
£722 GBP
View
A
Retailer 3
-
$971 USD
View
B+
Retailer 4
-
$1,123 USD
View
Most Expensive
B
MOH London
LG778629621 · Oct 29
$2,064 USD
£1,625 GBP
View
4 more retailers have this diamond
Prices start from $750 USDSave up to $1,314 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
4.00ct Marquise
$750 USD