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Marquise|Lab Grown|IGI

1.54ct E SI1 Marquise Lab Grown Diamond

VG • E/SI1 • IGI LG848668859

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG848668859

Diamond specifications and retailer prices

From £174 GBP
As of November 4, 2026
Save £1,119 GBP (87%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,293 GBP at Brilliant Earth · As of November 4, 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 SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG848668859 or 848668859. Listed at 18 retailers as of November 4, 2026, with prices from £174 to £1,293, a £1,119 spread on the same certified stone. Brilliant Earth lists it at £1,293. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.54
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG848668859
Dimensions12.50 × 5.99 × 3.64 mm
L/W Ratio2.09
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.50 mm5.99 mm1.54 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG848668859
Side View
Table 59.0%Crown 34.3°Girdle: MED-STKPavilion 39.3°Culet: NoneDepth 60.8%

Caratlytics Score

How it works →
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: £402 GBP|Low: £174 GBP|High: £966 GBP|Avg: £451 GBP|+2.7%
Retailer 1
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Retailer 17
November 6, 2026
Retailer 13£174 GBP
Retailer 6£193 GBP
Retailer 4£201 GBP
Retailer 14£215 GBP
Retailer 17£215 GBP
Retailer 7£247 GBP
Retailer 10£273 GBP
Retailer 15£290 GBP
Retailer 5£357 GBP
Retailer 1£402 GBP
Retailer 3£459 GBP
Retailer 12£572 GBP
Retailer 16£692 GBP
Retailer 8£708 GBP
Retailer 9£730 GBP
Retailer 11£860 GBP
Retailer 2£966 GBP

15 data points across 17 retailers

18 retailers£174 GBP to £1,293 GBP

A
Cheapest Retailer
-
£174 GBP
A
Retailer 2
-
£193 GBP
View
Final sale: no returns
A
Retailer 3
-
£201 GBP
View
Retailer 4
-
£215 GBP
View
Price last confirmed 12 days ago
A
Retailer 5
-
£215 GBP
View
A
Retailer 6
-
£247 GBP
View
A
Retailer 7
-
£273 GBP
View
B+
Retailer 8
-
£290 GBP
View
B+
Retailer 9
-
£357 GBP
View
B+
Retailer 10
-
£402 GBP
View
B+
Retailer 11
-
£459 GBP
View
B+
Retailer 12
-
£572 GBP
View
B
Retailer 13
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£692 GBP
View
B
Retailer 14
-
£708 GBP
View
B
Retailer 15
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£730 GBP
View
B
Retailer 16
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£860 GBP
View
B
Retailer 17
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£966 GBP
View
Most Expensive
B
Brilliant Earth
22397533A · Nov 4
£1,293 GBP
$1,740 USD
View
17 more retailers have this diamond
Prices start from £174 GBPSave up to £1,119 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
£174 GBP