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Marquise|Lab Grown|IGI

1.17ct F SI1 Marquise Lab Grown Diamond

F/SI1 • IGI LG620414739

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG620414739

Diamond specifications and retailer prices

From £370 GBP
As of November 2, 2026
1 retailer carries this diamond
Only listing: £370 GBP at MD Diamonds and Jewellers
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 MD Diamonds and Jewellers

About this 1.17ct lab-grown marquise diamond

This 1.17ct lab-grown marquise sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included) and certified by IGI LG620414739 or 620414739. 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. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.17
Carat
F
Colour
SI1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG620414739
Dimensions10.79 × 5.40 × 3.48 mm
L/W Ratio2.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
10.79 mm5.40 mm1.17 ctF / SI1
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG620414739
Side View
Table 57.0%Crown 36.3°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 64.4%

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: £370 GBP|Low: £370 GBP|High: £370 GBP|Avg: £370 GBP
December 30, 2025
MD Diamonds and Jewellers£370 GBP

3 data points across 1 retailer

1 retailer

B
MD Diamonds and Jewellers
LG620414739 · Nov 2
£370 GBP
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B
1.17ct Marquise
£370 GBP