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Marquise|Lab Grown|IGI

2.50ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG803613404

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG803613404

Diamond specifications and retailer prices

From £719 GBP
$964 USD
As of October 30, 2026
Save £3,117 GBP (81%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £3,836 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 2.5ct lab-grown marquise diamond

This 2.5ct lab-grown marquise sits in the two to three carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG803613404 or 803613404. Listed at 21 retailers as of October 30, 2026, with prices from £719 to £3,836, a £3,117 spread on the same certified stone. Brilliant Earth lists it at £3,836. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

2.50
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG803613404
Dimensions14.52 × 6.84 × 4.46 mm
L/W Ratio2.12
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.52 mm6.84 mm2.50 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG803613404
Side View
Table 61.0%Crown 35.3°Girdle: STK-THKPavilion 41.2°Culet: NoneDepth 65.2%

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: Oct 30
Current: £3,836 GBP|Low: £719 GBP|High: £5,911 GBP|Avg: £2,043 GBP|-35.1%
Brilliant Earth
Retailer 2
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Retailer 20
November 1, 2026
Retailer 5£719 GBP
Retailer 2£783 GBP
Retailer 9£805 GBP
Retailer 8£834 GBP
Retailer 14£844 GBP
Retailer 6£965 GBP
Retailer 18£1,026 GBP
Retailer 3£1,074 GBP
Retailer 15£1,287 GBP
Retailer 13£1,334 GBP
Retailer 12£1,422 GBP
Retailer 19£1,798 GBP
Retailer 20£1,925 GBP
Retailer 17£1,981 GBP
Retailer 10£2,309 GBP
Retailer 16£2,346 GBP
Retailer 4£2,588 GBP
Retailer 7£2,905 GBP
Retailer 11£2,912 GBP
Brilliant Earth£3,836 GBP

32 data points across 20 retailers

21 retailers£719 GBP to £3,836 GBP

A
Cheapest Retailer
-
£719 GBP
$964 USD
A
Retailer 2
-
£783 GBP
$1,049 USD
View
A
Retailer 3
-
£805 GBP
$1,079 USD
View
Final sale: no returns
A
Retailer 4
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£834 GBP
$1,118 USD
View
A
Retailer 5
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£844 GBP
View
A
Retailer 6
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£965 GBP
HK$10,100 HKD
View
A
Retailer 7
-
£1,026 GBP
$1,375 USD
View
A
Retailer 8
-
£1,074 GBP
$1,439 USD
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A
Retailer 9
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£1,287 GBP
View
A
Retailer 10
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£1,334 GBP
$1,788 USD
View
A
Retailer 11
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£1,422 GBP
€1,814 EUR
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A
Retailer 12
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£1,798 GBP
$2,409 USD
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A
Retailer 13
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£1,925 GBP
$2,579 USD
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A
Retailer 14
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£1,981 GBP
A$4,083 AUD
View
A
Retailer 15
-
£2,309 GBP
View
A
Retailer 16
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£2,346 GBP
$3,143 USD
View
A
Retailer 17
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£2,588 GBP
$3,467 USD
View
A
Retailer 18
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£2,905 GBP
$3,893 USD
View
A
Retailer 19
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£2,912 GBP
View
Retailer 20
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£3,224 GBP
$4,320 USD
View
Price last confirmed 35 days ago
Most Expensive
B+
Brilliant Earth
19883505A · Oct 31
£3,836 GBP
$5,140 USD
View
20 more retailers have this diamond
Prices start from £719 GBPSave up to £3,117 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
2.50ct Marquise
£719 GBP