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Marquise|Lab Grown|IGI

1.24ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG768629943

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG768629943

Diamond specifications and retailer prices

From £417 GBP
As of November 4, 2026
Save £968 GBP (70%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,385 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 LG768629943 or 768629943. Listed at 15 retailers as of November 4, 2026, with prices from £417 to £1,385, a £968 spread on the same certified stone. Brilliant Earth lists it at £1,385. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG768629943
Dimensions11.11 × 5.66 × 3.53 mm
L/W Ratio1.96
Girdle conditionFaceted
Culet sizePointed
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
11.11 mm5.66 mm1.24 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG768629943
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 62.4%

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 4
Current: £1,385 GBP|Low: £417 GBP|High: £1,867 GBP|Avg: £965 GBP|-25.8%
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 9£417 GBP
Retailer 10£450 GBP
Retailer 5£490 GBP
Retailer 4£548 GBP
Retailer 2£567 GBP
Retailer 15£641 GBP
Retailer 13£717 GBP
Retailer 11£727 GBP
Retailer 6£788 GBP
Retailer 3£1,119 GBP
Retailer 12£1,141 GBP
Retailer 8£1,241 GBP
Retailer 7£1,371 GBP
Retailer 14£1,371 GBP
Brilliant Earth£1,385 GBP

43 data points across 15 retailers

15 retailers£417 GBP to £1,385 GBP

A
Cheapest Retailer
-
£417 GBP
A
Retailer 2
-
£450 GBP
View
A
Retailer 3
-
£490 GBP
View
A
Retailer 4
-
£548 GBP
View
A
Retailer 5
-
£567 GBP
View
B+
Retailer 6
-
£641 GBP
View
B+
Retailer 7
-
£717 GBP
View
B+
Retailer 8
-
£727 GBP
View
B+
Retailer 9
-
£788 GBP
View
Retailer 10
-
£1,119 GBP
View
Price last confirmed 8 days ago
B+
Retailer 11
-
£1,141 GBP
View
B
Retailer 12
-
£1,241 GBP
View
B
Retailer 13
-
£1,371 GBP
View
B
Retailer 14
-
£1,371 GBP
View
Most Expensive
B
Brilliant Earth
20869798Y · Nov 4
£1,385 GBP
$1,870 USD
View
14 more retailers have this diamond
Prices start from £417 GBPSave up to £968 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
£417 GBP