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Marquise|Lab Grown|IGI

1.00ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG627400958

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG627400958

Diamond specifications and retailer prices

From £1,750 GBP
$2,330 USD
As of October 28, 2026
1 retailer carries this diamond
Only listing: £1,750 GBP at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Brilliant Earth

About this 1ct lab-grown marquise diamond

This 1ct lab-grown marquise sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG627400958 or 627400958. Listed at a single retailer as of October 28, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG627400958
Dimensions10.15 × 5.18 × 3.28 mm
L/W Ratio1.96
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
10.15 mm5.18 mm1.00 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG627400958
Side View
Table 60.0%Crown 35.8°Girdle: STK-THKPavilion 40.1°Culet: NoneDepth 63.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 28
Current: £1,750 GBP|Low: £910 GBP|High: £1,750 GBP|Avg: £1,377 GBP
Brilliant Earth
Retailer 2
December 30, 2025
Retailer 2£910 GBP
Brilliant Earth£1,750 GBP

5 data points across 2 retailers

1 retailer

B
Brilliant Earth
9988092A · Oct 28
£1,750 GBP
$2,330 USD
View

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B
1.00ct Marquise
£1,750 GBP