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Marquise|Lab Grown|IGI

1.59ct E SI1 Marquise Lab Grown Diamond

ID • E/SI1 • IGI LG760572111

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG760572111

Diamond specifications and retailer prices

From £1,089 GBP
$1,450 USD
As of October 30, 2026
1 retailer carries this diamond
Only listing: £1,089 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 1.59ct lab-grown marquise diamond

This 1.59ct lab-grown marquise sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG760572111 or 760572111. Listed at a single retailer as of October 30, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.59
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG760572111
Dimensions12.49 × 6.06 × 3.77 mm
L/W Ratio2.06
Girdle conditionFaceted
Top View
12.49 mm6.06 mm1.59 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG760572111
Side View
Table 58.0%Crown 34.9°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 62.2%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 30
Current: £1,089 GBP|Low: £200 GBP|High: £1,247 GBP|Avg: £634 GBP|+2.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
April 14, 2026
Retailer 4£202 GBP
Retailer 7£316 GBP
Retailer 5£392 GBP
Retailer 3£492 GBP
Retailer 2£591 GBP
Retailer 6£691 GBP
Brilliant Earth£1,089 GBP

31 data points across 7 retailers

1 retailer

B
Brilliant Earth
17069469A · Oct 30
£1,089 GBP
$1,450 USD
View

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B
1.59ct Marquise
£1,089 GBP