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Marquise|Lab Grown|IGI

1.53ct F SI1 Marquise Lab Grown Diamond

ID • F/SI1 • IGI LG852643119

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG852643119

Diamond specifications and retailer prices

From £319 GBP
$428 USD
As of November 1, 2026
Save £34 GBP (10%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £352 GBP at Adiamor · As of November 1, 2026
View at Adiamor

About this 1.53ct lab-grown marquise diamond

This 1.53ct lab-grown marquise sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG852643119 or 852643119. Listed at 3 retailers as of November 1, 2026, with a relatively tight 11% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.53
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle41.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG852643119
Dimensions12.55 × 5.87 × 3.68 mm
L/W Ratio2.14
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.55 mm5.87 mm1.53 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG852643119
Side View
Table 62.0%Crown 33.8°Girdle: MED-STKPavilion 41.7°Culet: NoneDepth 62.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £352 GBP|Low: £319 GBP|High: £352 GBP|Avg: £336 GBP
Adiamor
Retailer 2
Retailer 3
November 2, 2026
Retailer 3£319 GBP
Retailer 2£337 GBP
Adiamor£352 GBP

3 data points across 3 retailers

3 retailers£319 GBP to £352 GBP

B+
Cheapest Retailer
-
£319 GBP
$428 USD
A
Retailer 2
-
£337 GBP
View
Most Expensive
B+
Adiamor
D-82905462 · Nov 1
£352 GBP
$473 USD
View
2 more retailers have this diamond
Prices start from £319 GBPSave up to £34 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.53ct Marquise
£319 GBP