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Marquise|Lab Grown|IGI

1.54ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG788621215

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG788621215

Diamond specifications and retailer prices

From £801 GBP
As of November 4, 2026
Save £2,539 GBP (76%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: £3,341 GBP at Brilliant Earth · As of November 3, 2026
View at Brilliant Earth

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 LG788621215 or 788621215. Listed at 28 retailers as of November 3, 2026, with prices from £801 to £3,341, a £2,539 spread on the same certified stone. Brilliant Earth lists it at £3,341. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG788621215
Dimensions11.99 × 6.09 × 3.82 mm
L/W Ratio1.97
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
11.99 mm6.09 mm1.54 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG788621215
Side View
Table 56.0%Crown 33.7°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.7%

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: £3,341 GBP|Low: £716 GBP|High: £3,341 GBP|Avg: £1,766 GBP
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
November 5, 2026
Retailer 5£716 GBP
Retailer 7£936 GBP
Retailer 9£959 GBP
Retailer 11£1,183 GBP
Retailer 6£1,267 GBP
Retailer 3£1,484 GBP
Retailer 10£1,527 GBP
Retailer 8£1,790 GBP
Retailer 4£1,967 GBP
Retailer 12£2,067 GBP
Retailer 13£2,802 GBP
Retailer 2£2,809 GBP
Brilliant Earth£3,341 GBP

33 data points across 13 retailers

28 retailers£801 GBP to £3,341 GBP

Retailer 1
-
£716 GBP
Price last confirmed 28 days ago
Retailer 2
-
£779 GBP
View
Price last confirmed 21 days ago
A
Retailer 3
-
£801 GBP
View
Final sale: no returns
Retailer 4
-
£830 GBP
View
Price last confirmed 33 days ago
Retailer 5
-
£830 GBP
View
Price last confirmed 24 days ago
A
Retailer 6
-
£936 GBP
View
A
Retailer 7
-
£942 GBP
View
A
Retailer 8
-
£959 GBP
View
A
Retailer 9
-
£984 GBP
View
A
Retailer 10
-
£1,183 GBP
View
A
Retailer 11
-
£1,189 GBP
View
A
Retailer 12
-
£1,267 GBP
View
B+
Retailer 13
-
£1,484 GBP
View
B+
Retailer 14
-
£1,527 GBP
View
B+
Retailer 15
-
£1,650 GBP
View
B+
Retailer 16
-
£1,790 GBP
View
Retailer 17
-
£1,967 GBP
View
Price last confirmed 8 days ago
B
Retailer 18
-
£2,067 GBP
View
B
Retailer 19
-
£2,291 GBP
View
Retailer 20
-
£2,335 GBP
View
Price last confirmed 36 days ago
B
Retailer 21
-
£2,469 GBP
View
B
Retailer 22
-
£2,575 GBP
View
B
Retailer 23
-
£2,696 GBP
View
B
Retailer 24
-
£2,787 GBP
View
B
Retailer 25
-
£2,802 GBP
View
B
Retailer 26
-
£2,809 GBP
View
B
Retailer 27
-
£2,891 GBP
View
Most Expensive
B
Brilliant Earth
20086108A · Nov 3
£3,341 GBP
$4,510 USD
View
27 more retailers have this diamond
Prices start from £801 GBPSave up to £2,539 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
£801 GBP