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Marquise|Lab Grown|IGI

1.40ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG800678777

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG800678777

Diamond specifications and retailer prices

From $614 USD
HK$4,800 HKD
As of November 3, 2026
Save $1,846 USD (75%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,460 USD at Brilliant Earth · As of November 2, 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 E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG800678777 or 800678777. Listed at 14 retailers as of November 2, 2026, with prices from $614 to $2,460, a $1,846 spread on the same certified stone. Brilliant Earth lists it at $2,460. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.40
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800678777
Dimensions11.45 × 5.86 × 3.73 mm
L/W Ratio1.95
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
11.45 mm5.86 mm1.40 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800678777
Side View
Table 58.0%Crown 34.1°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 63.7%

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 3
Current: $2,460 USD|Low: $610 USD|High: $2,500 USD|Avg: $1,336 USD|-1.6%
Brilliant Earth
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
November 3, 2026
Retailer 14$614 USD
Retailer 13$750 USD
Retailer 3$766 USD
Retailer 11$853 USD
Retailer 7$876 USD
Retailer 8$916 USD
Retailer 4$1,080 USD
Retailer 6$1,232 USD
Retailer 2$1,277 USD
Retailer 10$1,745 USD
Retailer 9$1,951 USD
Retailer 5$2,025 USD
Retailer 12$2,055 USD
Brilliant Earth$2,460 USD

45 data points across 14 retailers

14 retailers$614 USD to $2,460 USD

A
Cheapest Retailer
-
$614 USD
HK$4,800 HKD
A
Retailer 2
-
$750 USD
View
A
Retailer 3
-
$766 USD
View
A
Retailer 4
-
$853 USD
€812 EUR
View
A
Retailer 5
-
$876 USD
£690 GBP
View
A
Retailer 6
-
$916 USD
ZAR 14,797 ZAR
View
B+
Retailer 7
-
$1,080 USD
View
Retailer 8
-
$1,232 USD
View
Price last confirmed 10 days ago
B+
Retailer 9
-
$1,277 USD
View
B+
Retailer 10
-
$1,745 USD
A$2,684 AUD
View
B+
Retailer 11
-
$1,951 USD
£1,536 GBP
View
B
Retailer 12
-
$2,055 USD
View
B
Retailer 13
-
$2,066 USD
View
Most Expensive
B
Brilliant Earth
20673967A · Nov 2
$2,460 USD
View
13 more retailers have this diamond
Prices start from $614 USDSave up to $1,846 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
$614 USD