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Marquise|Lab Grown|IGI

1.40ct G VS1 Marquise Lab Grown Diamond

ID • G/VS1 • IGI LG508156143

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG508156143

Diamond specifications and retailer prices

From $940 USD
As of October 31, 2026
Save $1,027 USD (52%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,672 USD at Friendly Diamonds · As of October 31, 2026
View at Friendly Diamonds

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 G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG508156143 or 508156143. Listed at 15 retailers as of October 31, 2026, with a 109% 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
G
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG508156143
Dimensions11.08 × 6.12 × 3.54 mm
L/W Ratio1.81
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
11.08 mm6.12 mm1.40 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG508156143
Side View
Table 66.0%Crown 33.4°Girdle: STK-THKPavilion 39.4°Culet: NoneDepth 57.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $1,775 USD|Low: $940 USD|High: $4,416 USD|Avg: $2,133 USD|-1.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 7$940 USD
Retailer 10$1,169 USD
Retailer 3$1,272 USD
Retailer 4$1,356 USD
Retailer 11$1,356 USD
Retailer 1$1,775 USD
Retailer 5$1,967 USD
Retailer 12$2,153 USD
Retailer 8$2,493 USD
Retailer 2$2,542 USD
Retailer 6$3,533 USD
Retailer 9$4,380 USD

41 data points across 12 retailers

15 retailers$940 USD to $1,967 USD

B+
Cheapest Retailer
-
$940 USD
B
Retailer 2
-
$1,169 USD
View
B
Retailer 3
-
$1,272 USD
View
B
Retailer 4
-
$1,356 USD
View
Retailer 5
-
$1,356 USD
View
Price last confirmed 15 days ago
B
Retailer 6
-
$1,530 USD
View
B
Retailer 7
-
$1,775 USD
£1,398 GBP
View
B
Retailer 8
-
$1,967 USD
£1,549 GBP
View
Retailer 9
-
$2,153 USD
View
Price under review
Retailer 10
-
$2,493 USD
ZAR 40,272 ZAR
View
Price under review
Retailer 11
-
$2,542 USD
View
Price under review
Most Expensive
Friendly Diamonds
3121704 · Oct 31
$2,672 USD
View
Price under review
11 more retailers have this diamond
Prices start from $940 USDSave up to $1,027 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.

B+
1.40ct Marquise
$940 USD