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Marquise|Lab Grown|IGI

1.24ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG743550678

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG743550678

Diamond specifications and retailer prices

From £287 GBP
As of November 4, 2026
Save £1,253 GBP (81%) vs most expensive(unlock to see where)
30 retailers carry this diamond
Most expensive: £1,541 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 LG743550678 or 743550678. Listed at 30 retailers as of November 4, 2026, with prices from £287 to £1,541, a £1,253 spread on the same certified stone. Brilliant Earth lists it at £1,541. 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 angle36.6°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG743550678
Dimensions10.90 × 5.59 × 3.57 mm
L/W Ratio1.95
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
10.90 mm5.59 mm1.24 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG743550678
Side View
Table 59.0%Crown 36.6°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 63.9%

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: £1,541 GBP|Low: £206 GBP|High: £1,985 GBP|Avg: £924 GBP|-5.5%
Brilliant Earth
Retailer 2
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November 5, 2026
Retailer 16£206 GBP
Retailer 20£287 GBP
Retailer 18£370 GBP
Retailer 14£416 GBP
Retailer 17£419 GBP
Retailer 23£450 GBP
Retailer 2£567 GBP
Retailer 11£584 GBP
Retailer 9£641 GBP
Retailer 12£647 GBP
Retailer 8£717 GBP
Retailer 6£727 GBP
Retailer 19£777 GBP
Retailer 22£934 GBP
Retailer 21£1,024 GBP
Retailer 7£1,055 GBP
Retailer 4£1,068 GBP
Retailer 10£1,133 GBP
Retailer 5£1,220 GBP
Retailer 3£1,230 GBP
Retailer 13£1,241 GBP
Retailer 15£1,292 GBP
Brilliant Earth£1,541 GBP

28 data points across 23 retailers

30 retailers£287 GBP to £1,541 GBP

Retailer 1
-
£206 GBP
Price last confirmed 28 days ago
A
Retailer 2
-
£287 GBP
View
Final sale: no returns
Retailer 3
-
£349 GBP
View
Price last confirmed 36 days ago
A
Retailer 4
-
£370 GBP
View
Retailer 5
-
£390 GBP
View
Price last confirmed 37 days ago
Retailer 6
-
£416 GBP
View
Price last confirmed 28 days ago
Retailer 7
-
£416 GBP
View
Price last confirmed 26 days ago
A
Retailer 8
-
£419 GBP
View
Retailer 9
-
£427 GBP
View
Price last confirmed 36 days ago
Retailer 10
-
£427 GBP
View
Price last confirmed 39 days ago
A
Retailer 11
-
£450 GBP
View
A
Retailer 12
-
£567 GBP
View
B+
Retailer 13
-
£584 GBP
View
B+
Retailer 14
-
£641 GBP
View
B+
Retailer 15
-
£647 GBP
View
B+
Retailer 16
-
£717 GBP
View
B+
Retailer 17
-
£727 GBP
View
B+
Retailer 18
-
£777 GBP
View
B+
Retailer 19
-
£934 GBP
View
B+
Retailer 20
-
£1,024 GBP
View
B+
Retailer 21
-
£1,055 GBP
View
B
Retailer 22
-
£1,068 GBP
View
Retailer 23
-
£1,133 GBP
View
Price last confirmed 8 days ago
B
Retailer 24
-
£1,220 GBP
View
B
Retailer 25
-
£1,230 GBP
View
B
Retailer 26
-
£1,241 GBP
View
Retailer 27
-
£1,292 GBP
View
Price last confirmed 28 days ago
Retailer 28
-
£1,338 GBP
View
Price last confirmed 26 days ago
Retailer 29
-
£1,390 GBP
View
Price last confirmed 36 days ago
Most Expensive
B
Brilliant Earth
16656237A · Nov 4
£1,541 GBP
$2,080 USD
View
29 more retailers have this diamond
Prices start from £287 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
1.24ct Marquise
£287 GBP