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Marquise|Lab Grown|IGI

1.54ct D FL Marquise Lab Grown Diamond

ID • D/FL • IGI LG787656875

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG787656875

Diamond specifications and retailer prices

From £852 GBP
$1,144 USD
As of November 1, 2026
Save £2,836 GBP (77%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £3,689 GBP at Brilliant Earth · As of November 2, 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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG787656875 or 787656875. Listed at 23 retailers as of November 1, 2026, with prices from £852 to £3,689, a £2,836 spread on the same certified stone. Brilliant Earth lists it at £3,689. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG787656875
Dimensions11.56 × 6.09 × 3.83 mm
L/W Ratio1.90
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
11.56 mm6.09 mm1.54 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG787656875
Side View
Table 59.0%Crown 34.3°Girdle: MED-THKPavilion 41.1°Culet: NoneDepth 62.9%

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 1
Current: £3,689 GBP|Low: £730 GBP|High: £3,689 GBP|Avg: £1,699 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
Retailer 14
Retailer 15
Retailer 16
November 2, 2026
Retailer 15£761 GBP
Retailer 8£852 GBP
Retailer 4£883 GBP
Retailer 5£883 GBP
Retailer 14£965 GBP
Retailer 7£1,034 GBP
Retailer 13£1,249 GBP
Retailer 16£1,263 GBP
Retailer 9£1,273 GBP
Retailer 12£1,623 GBP
Retailer 2£1,703 GBP
Retailer 10£2,393 GBP
Retailer 3£2,606 GBP
Retailer 6£2,960 GBP
Retailer 11£3,010 GBP
Brilliant Earth£3,689 GBP

42 data points across 16 retailers

23 retailers£852 GBP to £3,689 GBP

Retailer 1
-
£761 GBP
$1,021 USD
Price last confirmed 25 days ago
Retailer 2
-
£828 GBP
$1,111 USD
View
Price last confirmed 18 days ago
A
Retailer 3
-
£852 GBP
$1,144 USD
View
Final sale: no returns
Retailer 4
-
£883 GBP
$1,185 USD
View
Price last confirmed 30 days ago
Retailer 5
-
£883 GBP
$1,185 USD
View
Price last confirmed 21 days ago
A
Retailer 6
-
£962 GBP
$1,291 USD
View
A
Retailer 7
-
£965 GBP
$1,295 USD
View
A
Retailer 8
-
£1,034 GBP
$1,388 USD
View
A
Retailer 9
-
£1,249 GBP
A$2,578 AUD
View
A
Retailer 10
-
£1,263 GBP
$1,695 USD
View
A
Retailer 11
-
£1,273 GBP
View
B+
Retailer 12
-
£1,623 GBP
ZAR 35,182 ZAR
View
Retailer 13
-
£1,655 GBP
$2,221 USD
View
Price last confirmed 33 days ago
B+
Retailer 14
-
£1,703 GBP
$2,285 USD
View
B+
Retailer 15
-
£2,393 GBP
€3,058 EUR
View
B
Retailer 16
-
£2,442 GBP
View
B+
Retailer 17
-
£2,606 GBP
$3,497 USD
View
B
Retailer 18
-
£2,738 GBP
$3,674 USD
View
B
Retailer 19
-
£2,843 GBP
$3,815 USD
View
B
Retailer 20
-
£2,960 GBP
SGD 5,368 SGD
View
B
Retailer 21
-
£3,010 GBP
View
B
Retailer 22
-
£3,080 GBP
$4,133 USD
View
Most Expensive
B
Brilliant Earth
19704990A · Nov 2
£3,689 GBP
$4,950 USD
View
22 more retailers have this diamond
Prices start from £852 GBPSave up to £2,836 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
£852 GBP