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Marquise|Lab Grown|IGI

1.54ct E FL Marquise Lab Grown Diamond

ID • E/FL • IGI LG790656850

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG790656850

Diamond specifications and retailer prices

From £715 GBP
$958 USD
As of October 30, 2026
Save £2,226 GBP (76%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £2,941 GBP at Brilliant Earth · As of October 30, 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 E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG790656850 or 790656850. Listed at 25 retailers as of October 30, 2026, with prices from £715 to £2,941, a £2,226 spread on the same certified stone. Brilliant Earth lists it at £2,941. 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 angle33.4°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG790656850
Dimensions12.16 × 5.91 × 3.70 mm
L/W Ratio2.06
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.16 mm5.91 mm1.54 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG790656850
Side View
Table 60.0%Crown 33.4°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 62.6%

Caratlytics Score

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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: £2,941 GBP|Low: £715 GBP|High: £3,227 GBP|Avg: £1,700 GBP|-0.3%
Brilliant Earth
Retailer 2
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October 31, 2026
Retailer 7£715 GBP
Retailer 22£778 GBP
Retailer 13£800 GBP
Retailer 4£829 GBP
Retailer 6£829 GBP
Retailer 5£952 GBP
Retailer 19£959 GBP
Retailer 3£965 GBP
Retailer 9£1,040 GBP
Retailer 10£1,187 GBP
Retailer 17£1,278 GBP
Retailer 20£1,381 GBP
Retailer 16£1,391 GBP
Retailer 18£1,524 GBP
Retailer 2£1,585 GBP
Retailer 15£2,286 GBP
Retailer 8£2,331 GBP
Retailer 23£2,476 GBP
Retailer 11£2,695 GBP
Retailer 12£2,782 GBP
Retailer 21£2,816 GBP
Retailer 14£2,886 GBP
Brilliant Earth£2,941 GBP

31 data points across 23 retailers

25 retailers£715 GBP to £2,941 GBP

A
Cheapest Retailer
-
£715 GBP
$958 USD
A
Retailer 2
-
£778 GBP
$1,042 USD
View
A
Retailer 3
-
£800 GBP
$1,072 USD
View
Final sale: no returns
Retailer 4
-
£829 GBP
$1,111 USD
View
Price last confirmed 14 days ago
A
Retailer 5
-
£829 GBP
$1,111 USD
View
A
Retailer 6
-
£952 GBP
$1,276 USD
View
A
Retailer 7
-
£959 GBP
$1,285 USD
View
A
Retailer 8
-
£965 GBP
HK$10,100 HKD
View
A
Retailer 9
-
£1,040 GBP
$1,394 USD
View
A
Retailer 10
-
£1,187 GBP
$1,590 USD
View
A
Retailer 11
-
£1,278 GBP
View
B+
Retailer 12
-
£1,381 GBP
€1,762 EUR
View
B+
Retailer 13
-
£1,391 GBP
A$2,868 AUD
View
B+
Retailer 14
-
£1,524 GBP
ZAR 32,990 ZAR
View
B+
Retailer 15
-
£1,585 GBP
$2,124 USD
View
B+
Retailer 16
-
£2,286 GBP
View
B
Retailer 17
-
£2,331 GBP
$3,123 USD
View
B+
Retailer 18
-
£2,465 GBP
$3,303 USD
View
B+
Retailer 19
-
£2,476 GBP
$3,317 USD
View
B
Retailer 20
-
£2,695 GBP
$3,611 USD
View
B
Retailer 21
-
£2,782 GBP
SGD 5,038 SGD
View
B
Retailer 22
-
£2,816 GBP
View
B
Retailer 23
-
£2,886 GBP
$3,867 USD
View
Retailer 24
-
£2,941 GBP
$3,940 USD
View
Price last confirmed 14 days ago
Most Expensive
B
Brilliant Earth
20474493A · Oct 30
£2,941 GBP
$3,940 USD
View
24 more retailers have this diamond
Prices start from £715 GBPSave up to £2,226 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
£715 GBP