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Marquise|Lab Grown|IGI

1.24ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG754508730

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG754508730

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: £1,393 GBP at Novita Diamonds · As of October 1, 2026
View at Novita Diamonds

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 LG754508730 or 754508730. Listed at 15 retailers as of November 4, 2026, with a 232% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle35°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754508730
Dimensions11.19 × 5.67 × 3.45 mm
L/W Ratio1.97
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
11.19 mm5.67 mm1.24 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754508730
Side View
Table 59.0%Crown 35°Girdle: MED-STKPavilion 40°Culet: NoneDepth 60.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £1,393 GBP|Low: £417 GBP|High: £1,867 GBP|Avg: £1,013 GBP|+2.3%
Novita Diamonds
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 11£450 GBP
Retailer 6£490 GBP
Retailer 5£548 GBP
Retailer 2£567 GBP
Retailer 15£641 GBP
Retailer 13£727 GBP
Retailer 3£788 GBP
Retailer 4£1,119 GBP
Retailer 14£1,141 GBP
Retailer 12£1,219 GBP
Retailer 8£1,241 GBP
Retailer 7£1,371 GBP
Retailer 10£1,385 GBP
Novita Diamonds£1,393 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
-
£727 GBP
View
B+
Retailer 8
-
£788 GBP
View
Retailer 9
-
£1,119 GBP
View
Price last confirmed 8 days ago
B+
Retailer 10
-
£1,141 GBP
View
B
Retailer 11
-
£1,219 GBP
View
B
Retailer 12
-
£1,241 GBP
View
B
Retailer 13
-
£1,371 GBP
View
B
Retailer 14
-
£1,385 GBP
View
Most Expensive
Novita Diamonds
cert_754508730 · Oct 1
£1,393 GBP
A$2,893 AUD
View
Price last confirmed 35 days ago
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