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Marquise|Lab Grown|IGI

1.50ct F SI1 Marquise Lab Grown Diamond

VG • F/SI1 • IGI LG843629193

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG843629193

Diamond specifications and retailer prices

From £353 GBP
€451 EUR
As of October 27, 2026
Save £341 GBP (49%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £694 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 1.5ct lab-grown marquise diamond

This 1.5ct 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 very-good cut grade and certified by IGI LG843629193 or 843629193. Listed at 4 retailers as of October 27, 2026, with prices from £353 to £694, a £341 spread on the same certified stone. Taylor and Hart lists it at £694. 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

1.50
Carat
F
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle32.2°
Pavilion angle37.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843629193
Dimensions11.00 × 6.27 × 3.56 mm
L/W Ratio1.75
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.00 mm6.27 mm1.50 ctF / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG843629193
Side View
Table 68.0%Crown 32.2°Girdle: STK-THKPavilion 37.5°CuletDepth 56.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 27
Current: £376 GBP|Low: £333 GBP|High: £694 GBP|Avg: £496 GBP|+1.7%
Retailer 1
Retailer 2
Retailer 3
Taylor and Hart
November 2, 2026
Retailer 2£353 GBP
Retailer 1£376 GBP
Retailer 3£678 GBP
Taylor and Hart£694 GBP

17 data points across 4 retailers

4 retailers£353 GBP to £694 GBP

A
Cheapest Retailer
-
£353 GBP
€451 EUR
B+
Retailer 2
-
£376 GBP
View
Retailer 3
-
£678 GBP
$910 USD
View
Price last confirmed 8 days ago
Most Expensive
B
Taylor and Hart
HKK0ZRI · Oct 31
£694 GBP
$932 USD
View
3 more retailers have this diamond
Prices start from £353 GBPSave up to £341 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
1.50ct Marquise
£353 GBP