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Marquise|Lab Grown|IGI

2.50ct E IF Marquise Lab Grown Diamond

EX • E/IF • IGI LG800620600

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG800620600

Diamond specifications and retailer prices

From £880 GBP
$1,179 USD
As of October 30, 2026
Save £4,165 GBP (83%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £5,045 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 LG800620600 or 800620600. Listed at 24 retailers as of October 30, 2026, with prices from £880 to £5,045, a £4,165 spread on the same certified stone. Brilliant Earth lists it at £5,045. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800620600
Dimensions14.53 × 7.16 × 4.23 mm
L/W Ratio2.03
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.53 mm7.16 mm2.50 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800620600
Side View
Table 59.0%Crown 36.3°Girdle: MED-STKPavilion 39.3°Culet: NoneDepth 59.1%

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: £5,045 GBP|Low: £845 GBP|High: £5,224 GBP|Avg: £1,987 GBP|-2.9%
Brilliant Earth
Retailer 2
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Retailer 4
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Retailer 17
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Retailer 19
Retailer 20
November 1, 2026
Retailer 5£880 GBP
Retailer 6£985 GBP
Retailer 7£1,020 GBP
Retailer 11£1,020 GBP
Retailer 13£1,032 GBP
Retailer 17£1,149 GBP
Retailer 10£1,247 GBP
Retailer 18£1,459 GBP
Retailer 14£1,481 GBP
Retailer 19£1,796 GBP
Retailer 8£1,913 GBP
Retailer 9£1,979 GBP
Retailer 20£2,011 GBP
Retailer 15£2,423 GBP
Retailer 12£2,468 GBP
Retailer 16£2,633 GBP
Retailer 4£2,929 GBP
Retailer 3£3,222 GBP
Retailer 2£3,280 GBP
Brilliant Earth£5,045 GBP

35 data points across 20 retailers

24 retailers£880 GBP to £5,045 GBP

A
Cheapest Retailer
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£880 GBP
$1,179 USD
A
Retailer 2
-
£958 GBP
$1,283 USD
View
A
Retailer 3
-
£985 GBP
$1,320 USD
View
Final sale: no returns
Retailer 4
-
£1,020 GBP
$1,367 USD
View
Price last confirmed 15 days ago
A
Retailer 5
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£1,020 GBP
$1,367 USD
View
A
Retailer 6
-
£1,032 GBP
View
A
Retailer 7
-
£1,149 GBP
$1,540 USD
View
A
Retailer 8
-
£1,247 GBP
$1,671 USD
View
A
Retailer 9
-
£1,459 GBP
$1,955 USD
View
A
Retailer 10
-
£1,481 GBP
View
Retailer 11
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£1,796 GBP
€2,292 EUR
View
Price last confirmed 7 days ago
A
Retailer 12
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£1,913 GBP
$2,563 USD
View
A
Retailer 13
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£1,979 GBP
$2,652 USD
View
A
Retailer 14
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£2,011 GBP
$2,694 USD
View
Retailer 15
-
£2,382 GBP
$3,191 USD
View
Price last confirmed 39 days ago
A
Retailer 16
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£2,423 GBP
A$4,994 AUD
View
A
Retailer 17
-
£2,468 GBP
View
A
Retailer 18
-
£2,633 GBP
ZAR 56,996 ZAR
View
B+
Retailer 19
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£2,929 GBP
$3,924 USD
View
B+
Retailer 20
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£3,222 GBP
$4,317 USD
View
B+
Retailer 21
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£3,280 GBP
View
B+
Retailer 22
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£3,420 GBP
SGD 6,193 SGD
View
B+
Retailer 23
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£3,575 GBP
$4,790 USD
View
Most Expensive
B
Brilliant Earth
21319686A · Oct 31
£5,045 GBP
$6,760 USD
View
23 more retailers have this diamond
Prices start from £880 GBPSave up to £4,165 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
£880 GBP