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Cushion|Lab Grown|IGI

3.10ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG811674439

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG811674439

Diamond specifications and retailer prices

From £1,341 GBP
$1,786 USD
As of October 29, 2026
Save £3,540 GBP (73%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £4,881 GBP at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 3.1ct lab-grown cushion diamond

This 3.1ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG811674439 or 811674439. Listed at 16 retailers as of October 29, 2026, with prices from £1,341 to £4,881, a £3,540 spread on the same certified stone. Taylor and Hart lists it at £4,881. 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

3.10
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.5°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811674439
Dimensions11.05 × 7.34 × 4.58 mm
L/W Ratio1.51
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.05 mm7.34 mm3.10 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811674439
Side View
Table 54.0%Crown 41.5°Girdle: MED-STKPavilion 35°Culet: NoneDepth 62.4%

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: £1,534 GBP|Low: £1,341 GBP|High: £5,254 GBP|Avg: £2,883 GBP|-1.0%
Retailer 1
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
Taylor and Hart
October 30, 2026
Retailer 2£1,341 GBP
Retailer 3£1,390 GBP
Retailer 14£1,517 GBP
Retailer 1£1,534 GBP
Retailer 5£1,599 GBP
Retailer 8£1,969 GBP
Retailer 11£1,986 GBP
Retailer 4£2,453 GBP
Retailer 12£3,143 GBP
Retailer 9£3,227 GBP
Retailer 6£3,353 GBP
Retailer 15£3,745 GBP
Retailer 10£3,974 GBP
Retailer 13£4,240 GBP
Retailer 7£4,647 GBP
Taylor and Hart£4,881 GBP

42 data points across 16 retailers

16 retailers£1,341 GBP to £4,881 GBP

A
Cheapest Retailer
-
£1,341 GBP
$1,786 USD
Final sale: no returns
Retailer 2
-
£1,390 GBP
$1,851 USD
View
Price last confirmed 17 days ago
A
Retailer 3
-
£1,517 GBP
$2,020 USD
View
A
Retailer 4
-
£1,534 GBP
View
A
Retailer 5
-
£1,599 GBP
$2,130 USD
View
A
Retailer 6
-
£1,969 GBP
View
A
Retailer 7
-
£1,986 GBP
$2,645 USD
View
A
Retailer 8
-
£2,453 GBP
$3,267 USD
View
Retailer 9
-
£3,143 GBP
A$6,440 AUD
View
Price last confirmed 7 days ago
A
Retailer 10
-
£3,227 GBP
ZAR 69,424 ZAR
View
B+
Retailer 11
-
£3,353 GBP
View
B+
Retailer 12
-
£3,745 GBP
$4,987 USD
View
B+
Retailer 13
-
£3,974 GBP
View
B+
Retailer 14
-
£4,240 GBP
$5,646 USD
View
B+
Retailer 15
-
£4,647 GBP
SGD 8,363 SGD
View
Most Expensive
B+
Taylor and Hart
4F0QWPP · Oct 30
£4,881 GBP
$6,500 USD
View
15 more retailers have this diamond
Prices start from £1,341 GBPSave up to £3,540 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
3.10ct Cushion
£1,341 GBP