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Round|Lab Grown|IGI

2.50ct E IF Round Lab Grown Diamond

EX • E/IF • IGI LG639437396

Shape and cutting style on the report: Round brilliant

Certificate IGI LG639437396

Diamond specifications and retailer prices

From £781 GBP
$1,047 USD
As of October 29, 2026
Save £2,382 GBP (75%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £4,101 GBP at Rare Carat · As of October 21, 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 LG639437396 or 639437396. Listed at 25 retailers as of October 29, 2026, with a 305% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle36.6°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG639437396
Dimensions8.56 × 8.52 × 5.43 mm
L/W Ratio1.00
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
8.56 mm8.52 mm2.50 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG639437396
Side View
Table 57.0%Crown 36.6°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 63.6%

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 29
Current: £4,101 GBP|Low: £781 GBP|High: £4,142 GBP|Avg: £1,992 GBP|-1.0%
Rare Carat
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
October 31, 2026
Retailer 13£781 GBP
Retailer 5£875 GBP
Retailer 10£1,037 GBP
Retailer 4£1,085 GBP
Retailer 8£1,307 GBP
Retailer 11£1,321 GBP
Retailer 7£1,472 GBP
Retailer 2£2,151 GBP
Retailer 9£2,338 GBP
Retailer 6£2,502 GBP
Retailer 14£2,731 GBP
Retailer 3£3,039 GBP
Retailer 12£3,078 GBP
Rare Carat£4,101 GBP

43 data points across 14 retailers

25 retailers£781 GBP to £3,164 GBP

A
Cheapest Retailer
-
£781 GBP
$1,047 USD
A
Retailer 2
-
£850 GBP
$1,139 USD
View
A
Retailer 3
-
£875 GBP
$1,172 USD
View
Final sale: no returns
Retailer 4
-
£894 GBP
$1,198 USD
View
Price last confirmed 61 days ago
Retailer 5
-
£906 GBP
$1,214 USD
View
Price last confirmed 15 days ago
A
Retailer 6
-
£906 GBP
$1,214 USD
View
A
Retailer 7
-
£1,037 GBP
$1,390 USD
View
A
Retailer 8
-
£1,051 GBP
HK$11,000 HKD
View
A
Retailer 9
-
£1,085 GBP
$1,454 USD
View
A
Retailer 10
-
£1,307 GBP
View
A
Retailer 11
-
£1,321 GBP
$1,770 USD
View
A
Retailer 12
-
£1,448 GBP
$1,940 USD
View
A
Retailer 13
-
£1,472 GBP
€1,878 EUR
View
B+
Retailer 14
-
£1,699 GBP
$2,276 USD
View
B+
Retailer 15
-
£1,894 GBP
$2,538 USD
View
B+
Retailer 16
-
£2,151 GBP
A$4,435 AUD
View
B+
Retailer 17
-
£2,338 GBP
ZAR 50,612 ZAR
View
B+
Retailer 18
-
£2,502 GBP
View
B
Retailer 19
-
£2,731 GBP
$3,659 USD
View
B
Retailer 20
-
£2,810 GBP
$3,765 USD
View
B
Retailer 21
-
£2,908 GBP
$3,896 USD
View
B
Retailer 22
-
£3,039 GBP
SGD 5,502 SGD
View
B+
Retailer 23
-
£3,078 GBP
View
B
Retailer 24
-
£3,164 GBP
$4,239 USD
View
Most Expensive
Rare Carat
188BL78-2A · Oct 21
£4,101 GBP
$5,495 USD
View
Price last confirmed 11 days ago
24 more retailers have this diamond
Prices start from £781 GBPSave up to £2,382 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
£781 GBP