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Marquise|Lab Grown|IGI

1.54ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG750515387

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG750515387

Diamond specifications and retailer prices

From £589 GBP
As of November 4, 2026
Save £2,054 GBP (78%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £2,643 GBP at Novita Diamonds · As of October 31, 2026
View at Novita Diamonds

About this 1.54ct lab-grown marquise diamond

This 1.54ct lab-grown marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG750515387 or 750515387. Listed at 21 retailers as of October 31, 2026, with prices from £589 to £2,643, a £2,054 spread on the same certified stone. Novita Diamonds lists it at £2,643. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.54
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG750515387
Dimensions11.60 × 6.12 × 3.82 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.60 mm6.12 mm1.54 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG750515387
Side View
Table 61.0%Crown 33.6°Girdle: MED-STKPavilion 40.8°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: £2,643 GBP|Low: £589 GBP|High: £2,667 GBP|Avg: £1,257 GBP
Novita Diamonds
Retailer 2
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November 5, 2026
Retailer 14£589 GBP
Retailer 16£641 GBP
Retailer 5£659 GBP
Retailer 8£683 GBP
Retailer 12£703 GBP
Retailer 13£770 GBP
Retailer 18£815 GBP
Retailer 4£899 GBP
Retailer 10£1,029 GBP
Retailer 17£1,037 GBP
Retailer 7£1,102 GBP
Retailer 11£1,116 GBP
Retailer 3£1,255 GBP
Retailer 19£1,500 GBP
Retailer 9£1,750 GBP
Retailer 15£1,921 GBP
Retailer 20£2,180 GBP
Retailer 6£2,362 GBP
Retailer 2£2,554 GBP
Novita Diamonds£2,643 GBP

27 data points across 20 retailers

21 retailers£589 GBP to £2,643 GBP

A
Cheapest Retailer
-
£589 GBP
A
Retailer 2
-
£641 GBP
View
A
Retailer 3
-
£659 GBP
View
Final sale: no returns
A
Retailer 4
-
£683 GBP
View
Retailer 5
-
£703 GBP
View
Price last confirmed 19 days ago
A
Retailer 6
-
£770 GBP
View
A
Retailer 7
-
£815 GBP
View
A
Retailer 8
-
£876 GBP
View
A
Retailer 9
-
£899 GBP
View
A
Retailer 10
-
£1,029 GBP
View
A
Retailer 11
-
£1,037 GBP
View
A
Retailer 12
-
£1,102 GBP
View
Retailer 13
-
£1,116 GBP
View
Price last confirmed 9 days ago
A
Retailer 14
-
£1,255 GBP
View
B+
Retailer 15
-
£1,500 GBP
View
B+
Retailer 16
-
£1,750 GBP
View
B+
Retailer 17
-
£1,921 GBP
View
B
Retailer 18
-
£2,180 GBP
View
B
Retailer 19
-
£2,362 GBP
View
B
Retailer 20
-
£2,554 GBP
View
Most Expensive
B
Novita Diamonds
cert_750515387 · Oct 31
£2,643 GBP
A$5,489 AUD
View
20 more retailers have this diamond
Prices start from £589 GBPSave up to £2,054 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
1.54ct Marquise
£589 GBP