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Marquise|Lab Grown|IGI

1.24ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG847675944

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG847675944

Diamond specifications and retailer prices

From £155 GBP
As of November 4, 2026
Save £1,208 GBP (89%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,363 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.24ct lab-grown marquise diamond

This 1.24ct lab-grown marquise sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG847675944 or 847675944. Listed at 15 retailers as of November 4, 2026, with prices from £155 to £1,363, a £1,208 spread on the same certified stone. Brilliant Earth lists it at £1,363. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.24
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.4°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG847675944
Dimensions11.56 × 5.60 × 3.35 mm
L/W Ratio2.06
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
11.56 mm5.60 mm1.24 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG847675944
Side View
Table 59.0%Crown 32.4°Girdle: STK-THKPavilion 39.2°Culet: NoneDepth 59.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £1,363 GBP|Low: £155 GBP|High: £1,585 GBP|Avg: £650 GBP|-14.0%
Brilliant Earth
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
Retailer 15
November 5, 2026
Retailer 11£155 GBP
Retailer 12£180 GBP
Retailer 8£197 GBP
Retailer 13£307 GBP
Retailer 5£330 GBP
Retailer 6£363 GBP
Retailer 10£469 GBP
Retailer 15£597 GBP
Retailer 14£617 GBP
Retailer 9£619 GBP
Retailer 2£767 GBP
Retailer 3£807 GBP
Retailer 7£1,093 GBP
Retailer 4£1,276 GBP
Brilliant Earth£1,363 GBP

9 data points across 15 retailers

15 retailers£155 GBP to £1,363 GBP

A
Cheapest Retailer
-
£155 GBP
A
Retailer 2
-
£180 GBP
View
A
Retailer 3
-
£197 GBP
View
A
Retailer 4
-
£307 GBP
View
A
Retailer 5
-
£330 GBP
View
Retailer 6
-
£363 GBP
View
Price last confirmed 7 days ago
A
Retailer 7
-
£469 GBP
View
B+
Retailer 8
-
£597 GBP
View
B+
Retailer 9
-
£617 GBP
View
B+
Retailer 10
-
£619 GBP
View
B+
Retailer 11
-
£767 GBP
View
B+
Retailer 12
-
£807 GBP
View
Retailer 13
-
£1,093 GBP
View
Price last confirmed 8 days ago
B
Retailer 14
-
£1,276 GBP
View
Most Expensive
B
Brilliant Earth
22337006A · Nov 4
£1,363 GBP
$1,840 USD
View
14 more retailers have this diamond
Prices start from £155 GBPSave up to £1,208 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
1.24ct Marquise
£155 GBP