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Round|Lab Grown|IGI

2.50ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG780668455

Shape and cutting style on the report: Round brilliant

Certificate IGI LG780668455

Diamond specifications and retailer prices

From £829 GBP
$1,111 USD
As of October 31, 2026
5 retailers carry this diamond
Most expensive: £4,011 GBP at Rare Carat · As of September 9, 2026
View at Rare Carat

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 LG780668455 or 780668455. Listed at 5 retailers as of October 31, 2026. 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 angle34.3°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780668455
Dimensions8.72 × 8.80 × 5.31 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
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
8.72 mm8.80 mm2.50 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780668455
Side View
Table 58.0%Crown 34.3°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.6%

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 31
Current: £4,011 GBP|Low: £319 GBP|High: £5,314 GBP|Avg: £1,455 GBP
Rare Carat
Retailer 2
Retailer 3
Retailer 4
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September 28, 2026
Retailer 15£401 GBP
Retailer 16£497 GBP
Retailer 17£700 GBP
Retailer 10£718 GBP
Retailer 13£737 GBP
Retailer 9£762 GBP
Retailer 3£806 GBP
Retailer 2£829 GBP
Retailer 14£1,167 GBP
Retailer 12£1,173 GBP
Retailer 6£1,188 GBP
Retailer 4£1,319 GBP
Retailer 7£1,615 GBP
Retailer 5£1,694 GBP
Retailer 11£1,890 GBP
Rare Carat£4,011 GBP
Retailer 8£5,314 GBP

7 data points across 17 retailers

5 retailers

Retailer 1
-
£491 GBP
$658 USD
Price last confirmed 42 days ago
A
Retailer 2
-
£829 GBP
$1,111 USD
View
Final sale: no returns
Retailer 3
-
£1,188 GBP
$1,592 USD
View
Price last confirmed 40 days ago
Retailer 4
-
£1,308 GBP
$1,753 USD
View
Price last confirmed 41 days ago
Most Expensive
Rare Carat
C108-2A · Sep 9
£4,011 GBP
$5,374 USD
View
Price last confirmed 53 days ago
4 more retailers have this diamond
Prices start from £829 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
£829 GBP