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Marquise|Lab Grown|IGI

1.98ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG648450316

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG648450316

Diamond specifications and retailer prices

From £574 GBP
As of November 2, 2026
1 retailer carries this diamond
Only listing: £574 GBP at Diamond Quarter
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 Diamond Quarter

About this 1.98ct lab-grown marquise diamond

This 1.98ct 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 LG648450316 or 648450316. Listed at a single retailer as of November 2, 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

1.98
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG648450316
Dimensions13.32 × 6.44 × 4.06 mm
L/W Ratio2.07
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.32 mm6.44 mm1.98 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG648450316
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 40.7°CuletDepth 63.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 2
Current: £574 GBP|Low: £574 GBP|High: £574 GBP|Avg: £574 GBP
September 26, 2026
Diamond Quarter£574 GBP

1 data point across 1 retailer

1 retailer

B
Diamond Quarter
1.98SI1ELG16AAF9N · Nov 2
£574 GBP
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B
1.98ct Marquise
£574 GBP