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Marquise|Lab Grown|IGI

0.80ct E IF Marquise Lab Grown Diamond

EX • E/IF • IGI LG640402020

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG640402020

Diamond specifications and retailer prices

From £178 GBP
$239 USD
As of October 31, 2026
1 retailer carries this diamond
Only listing: £178 GBP at William & Sons Jewelers
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 William & Sons Jewelers

About this 0.8ct lab-grown marquise diamond

This 0.8ct lab-grown marquise sits in the just-under-one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG640402020 or 640402020. Listed at a single retailer as of October 31, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.80
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG640402020
Dimensions9.48 × 4.81 mm
L/W Ratio1.97
Girdle conditionFaceted
Culet sizePointed
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
9.48 mm4.81 mm0.80 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG640402020
Side View
Table 58.0%Crown 35.3°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 63.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: £501 GBP|Low: £127 GBP|High: £940 GBP|Avg: £508 GBP|-3.0%
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William & Sons Jewelers
September 28, 2026
William & Sons Jewelers£178 GBP
Retailer 9£280 GBP
Retailer 7£313 GBP
Retailer 8£336 GBP
Retailer 5£344 GBP
Retailer 10£348 GBP
Retailer 2£469 GBP
Retailer 11£481 GBP
Retailer 1£501 GBP
Retailer 12£554 GBP
Retailer 6£633 GBP
Retailer 13£647 GBP
Retailer 3£738 GBP
Retailer 4£940 GBP

66 data points across 14 retailers

1 retailer

A
William & Sons Jewelers
cert_LG640402020 · Oct 31
£178 GBP
$239 USD
View
Final sale: no returns

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A
0.80ct Marquise
£178 GBP