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Round|Lab Grown|IGI

2.50ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG809651035

Shape and cutting style on the report: Round brilliant

Certificate IGI LG809651035

Diamond specifications and retailer prices

From £440 GBP
$589 USD
As of October 31, 2026
Save £3,703 GBP (89%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: £4,142 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 2.5ct lab-grown round diamond

This 2.5ct lab-grown round 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 LG809651035 or 809651035. Listed at 26 retailers as of October 31, 2026, with prices from £440 to £4,142, a £3,703 spread on the same certified stone. Brilliant Earth lists it at £4,142. 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 angle35.2°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG809651035
Dimensions8.74 × 8.67 × 5.40 mm
L/W Ratio1.01
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
8.74 mm8.67 mm2.50 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG809651035
Side View
Table 56.0%Crown 35.2°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.1%

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: Oct 31
Current: £4,142 GBP|Low: £440 GBP|High: £5,157 GBP|Avg: £1,444 GBP|-19.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 1, 2026
Retailer 4£440 GBP
Retailer 10£590 GBP
Retailer 15£687 GBP
Retailer 8£737 GBP
Retailer 13£745 GBP
Retailer 2£754 GBP
Retailer 12£1,083 GBP
Retailer 11£1,130 GBP
Retailer 5£1,143 GBP
Retailer 14£1,177 GBP
Retailer 17£1,316 GBP
Retailer 7£1,586 GBP
Retailer 16£1,670 GBP
Retailer 3£1,809 GBP
Retailer 6£2,040 GBP
Retailer 9£3,933 GBP
Brilliant Earth£4,142 GBP

40 data points across 17 retailers

26 retailers£440 GBP to £4,142 GBP

Retailer 1
-
£409 GBP
$548 USD
Price last confirmed 21 days ago
Retailer 2
-
£416 GBP
$558 USD
View
Price last confirmed 40 days ago
A
Retailer 3
-
£440 GBP
$589 USD
View
Final sale: no returns
Retailer 4
-
£466 GBP
$625 USD
View
Price last confirmed 38 days ago
Retailer 5
-
£507 GBP
$679 USD
View
Price last confirmed 29 days ago
Retailer 6
-
£507 GBP
$679 USD
View
Price last confirmed 19 days ago
Retailer 7
-
£510 GBP
$683 USD
View
Price last confirmed 37 days ago
A
Retailer 8
-
£590 GBP
$790 USD
View
A
Retailer 9
-
£687 GBP
$920 USD
View
A
Retailer 10
-
£737 GBP
$987 USD
View
A
Retailer 11
-
£745 GBP
€951 EUR
View
A
Retailer 12
-
£754 GBP
View
A
Retailer 13
-
£1,083 GBP
A$2,233 AUD
View
A
Retailer 14
-
£1,130 GBP
$1,514 USD
View
A
Retailer 15
-
£1,143 GBP
$1,532 USD
View
A
Retailer 16
-
£1,177 GBP
ZAR 25,488 ZAR
View
A
Retailer 17
-
£1,316 GBP
$1,763 USD
View
Retailer 18
-
£1,333 GBP
$1,786 USD
View
Price last confirmed 24 days ago
Retailer 19
-
£1,358 GBP
$1,819 USD
View
Price last confirmed 41 days ago
B+
Retailer 20
-
£1,586 GBP
$2,125 USD
View
B+
Retailer 21
-
£1,670 GBP
$2,238 USD
View
B+
Retailer 22
-
£1,708 GBP
$2,289 USD
View
B+
Retailer 23
-
£1,809 GBP
$2,424 USD
View
B+
Retailer 24
-
£2,040 GBP
View
Retailer 25
-
£3,933 GBP
$5,270 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
20536747A · Oct 31
£4,142 GBP
$5,550 USD
View
25 more retailers have this diamond
Prices start from £440 GBPSave up to £3,703 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 Round
£440 GBP