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Marquise|Lab Grown|IGI

1.54ct E FL Marquise Lab Grown Diamond

ID • E/FL • IGI LG818654174

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818654174

Diamond specifications and retailer prices

From £561 GBP
$752 USD
As of October 30, 2026
Save £2,805 GBP (83%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £3,366 GBP at With Clarity · As of October 31, 2026
View at With Clarity

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 E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818654174 or 818654174. Listed at 21 retailers as of October 30, 2026, with prices from £561 to £3,366, a £2,805 spread on the same certified stone. With Clarity lists it at £3,366. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.54
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818654174
Dimensions11.50 × 6.05 × 3.86 mm
L/W Ratio1.90
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
11.50 mm6.05 mm1.54 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818654174
Side View
Table 57.0%Crown 33.8°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 63.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £1,046 GBP|Low: £561 GBP|High: £3,485 GBP|Avg: £1,624 GBP|-17.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 7
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Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
With Clarity
October 31, 2026
Retailer 7£561 GBP
Retailer 3£610 GBP
Retailer 9£651 GBP
Retailer 17£661 GBP
Retailer 4£784 GBP
Retailer 5£901 GBP
Retailer 1£1,046 GBP
Retailer 8£1,055 GBP
Retailer 16£1,080 GBP
Retailer 14£1,197 GBP
Retailer 2£1,409 GBP
Retailer 10£1,831 GBP
Retailer 6£2,025 GBP
Retailer 15£2,132 GBP
Retailer 11£2,246 GBP
Retailer 18£2,370 GBP
Retailer 19£2,470 GBP
Retailer 13£2,571 GBP
Retailer 12£2,709 GBP
With Clarity£3,366 GBP

32 data points across 20 retailers

21 retailers£561 GBP to £3,366 GBP

A
Cheapest Retailer
-
£561 GBP
$752 USD
A
Retailer 2
-
£610 GBP
$818 USD
View
A
Retailer 3
-
£651 GBP
$872 USD
View
Retailer 4
-
£651 GBP
$872 USD
View
Price last confirmed 13 days ago
A
Retailer 5
-
£661 GBP
$885 USD
View
Final sale: no returns
A
Retailer 6
-
£784 GBP
$1,050 USD
View
A
Retailer 7
-
£901 GBP
$1,207 USD
View
A
Retailer 8
-
£1,046 GBP
View
A
Retailer 9
-
£1,055 GBP
$1,413 USD
View
A
Retailer 10
-
£1,080 GBP
€1,378 EUR
View
A
Retailer 11
-
£1,197 GBP
ZAR 25,907 ZAR
View
B+
Retailer 12
-
£1,409 GBP
$1,888 USD
View
B+
Retailer 13
-
£1,831 GBP
$2,453 USD
View
B
Retailer 14
-
£2,025 GBP
View
B+
Retailer 15
-
£2,132 GBP
$2,857 USD
View
B
Retailer 16
-
£2,246 GBP
$3,010 USD
View
B+
Retailer 17
-
£2,370 GBP
SGD 4,291 SGD
View
B+
Retailer 18
-
£2,470 GBP
$3,310 USD
View
B+
Retailer 19
-
£2,571 GBP
View
B
Retailer 20
-
£2,709 GBP
$3,630 USD
View
Most Expensive
B
With Clarity
818654174 · Oct 31
£3,366 GBP
$4,510 USD
View
20 more retailers have this diamond
Prices start from £561 GBPSave up to £2,805 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
£561 GBP