Marquise|Lab Grown|IGI

1.40ct F FL Marquise Lab Grown Diamond

EX • F/FL • IGI LG813601658

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG813601658

Diamond specifications and retailer prices

From $708 USD
As of November 1, 2026
Save $1,354 USD (66%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $2,930 USD at Brilliant Earth · As of October 3, 2026
View at Brilliant Earth

About this 1.4ct lab-grown marquise diamond

This 1.4ct lab-grown marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG813601658 or 813601658. Listed at 10 retailers as of November 1, 2026, with a 191% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.40
Carat
F
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG813601658
Dimensions12.01 × 5.76 × 3.47 mm
L/W Ratio2.09
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.01 mm5.76 mm1.40 ctF / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG813601658
Side View
Table 62.0%Crown 34.3°Girdle: THN-MEDPavilion 40.5°Culet: NoneDepth 60.2%

Caratlytics Score

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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: $2,000 USD|Low: $402 USD|High: $2,940 USD|Avg: $1,192 USD|-32.0%
Brilliant Earth
Retailer 2
Retailer 3
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Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 15
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Retailer 17
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Retailer 19
October 30, 2026
Retailer 19$447 USD
Retailer 3$595 USD
Retailer 9$667 USD
Retailer 17$686 USD
Retailer 12$708 USD
Retailer 2$740 USD
Retailer 18$762 USD
Retailer 5$794 USD
Retailer 4$814 USD
Retailer 15$967 USD
Retailer 8$1,086 USD
Retailer 13$1,460 USD
Retailer 10$1,475 USD
Retailer 7$1,590 USD
Retailer 11$1,704 USD
Retailer 6$1,764 USD
Brilliant Earth$2,000 USD
Retailer 14$2,024 USD
Retailer 16$2,062 USD

21 data points across 19 retailers

10 retailers$708 USD to $2,062 USD

A
Cheapest Retailer
-
$708 USD
A
Retailer 2
-
$740 USD
A$1,138 AUD
View
Retailer 3
-
$762 USD
ZAR 12,308 ZAR
View
Price last confirmed 32 days ago
Retailer 4
-
$814 USD
View
Price last confirmed 30 days ago
Retailer 5
-
$967 USD
View
Price last confirmed 9 days ago
B
Retailer 6
-
$1,460 USD
CA$2,027 CAD
View
B
Retailer 7
-
$2,000 USD
View
B
Retailer 8
-
$2,024 USD
View
B
Retailer 9
-
$2,062 USD
View
Most Expensive
Brilliant Earth
20553964A · Oct 3
$2,930 USD
View
Price last confirmed 30 days ago
9 more retailers have this diamond
Prices start from $708 USDSave up to $1,354 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
1.40ct Marquise
$708 USD