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Marquise|Lab Grown|IGI

1.50ct F IF Marquise Lab Grown Diamond

VG • F/IF • IGI LG830619923

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG830619923

Diamond specifications and retailer prices

From £389 GBP
As of November 5, 2026
Save £1,253 GBP (76%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,641 GBP at With Clarity · As of November 5, 2026
View at With Clarity

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 IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG830619923 or 830619923. Listed at 15 retailers as of November 5, 2026, with prices from £389 to £1,641, a £1,253 spread on the same certified stone. With Clarity lists it at £1,641. 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
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle28.4°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830619923
Dimensions11.81 × 6.03 × 3.60 mm
L/W Ratio1.96
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.81 mm6.03 mm1.50 ctF / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830619923
Side View
Table 60.0%Crown 28.4°Girdle: STK-THKPavilion 39.8°Culet: NoneDepth 59.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £389 GBP|Low: £389 GBP|High: £1,641 GBP|Avg: £972 GBP|-0.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
With Clarity
November 5, 2026
Retailer 1£389 GBP
Retailer 2£490 GBP
Retailer 6£511 GBP
Retailer 7£620 GBP
Retailer 3£632 GBP
Retailer 12£656 GBP
Retailer 4£767 GBP
Retailer 13£861 GBP
Retailer 9£887 GBP
Retailer 14£1,233 GBP
Retailer 5£1,248 GBP
Retailer 8£1,393 GBP
Retailer 11£1,424 GBP
Retailer 10£1,597 GBP
With Clarity£1,641 GBP

14 data points across 15 retailers

15 retailers£389 GBP to £1,641 GBP

A
Cheapest Retailer
-
£389 GBP
A
Retailer 2
-
£490 GBP
View
A
Retailer 3
-
£511 GBP
View
A
Retailer 4
-
£620 GBP
View
Retailer 5
-
£632 GBP
View
Price last confirmed 12 days ago
A
Retailer 6
-
£656 GBP
View
A
Retailer 7
-
£767 GBP
View
A
Retailer 8
-
£861 GBP
View
B+
Retailer 9
-
£887 GBP
View
B+
Retailer 10
-
£1,233 GBP
View
B+
Retailer 11
-
£1,248 GBP
View
B+
Retailer 12
-
£1,393 GBP
View
B+
Retailer 13
-
£1,424 GBP
View
B
Retailer 14
-
£1,597 GBP
View
Most Expensive
B
With Clarity
830619923 · Nov 5
£1,641 GBP
$2,209 USD
View
14 more retailers have this diamond
Prices start from £389 GBPSave up to £1,253 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
£389 GBP