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Cushion|Lab Grown|IGI

4.59ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG819642918

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG819642918

Diamond specifications and retailer prices

From £2,138 GBP
As of November 1, 2026
Save £7,300 GBP (77%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £9,438 GBP at With Clarity · As of October 31, 2026
View at With Clarity

About this 4.59ct lab-grown cushion diamond

This 4.59ct 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 LG819642918 or 819642918. Listed at 17 retailers as of October 31, 2026, with prices from £2,138 to £9,438, a £7,300 spread on the same certified stone. With Clarity lists it at £9,438. 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

4.59
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.6°
Pavilion angle34.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG819642918
Dimensions11.79 × 8.39 × 5.67 mm
L/W Ratio1.41
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.79 mm8.39 mm4.59 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG819642918
Side View
Table 61.0%Crown 39.6°Girdle: STK-VTKPavilion 34.3°Culet: NoneDepth 67.6%

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: Nov 1
Current: £2,138 GBP|Low: £2,137 GBP|High: £9,438 GBP|Avg: £4,720 GBP|-1.3%
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
Retailer 16
With Clarity
November 1, 2026
Retailer 1£2,138 GBP
Retailer 3£2,567 GBP
Retailer 4£2,598 GBP
Retailer 2£2,687 GBP
Retailer 7£2,716 GBP
Retailer 9£3,469 GBP
Retailer 13£3,668 GBP
Retailer 10£4,076 GBP
Retailer 8£4,425 GBP
Retailer 6£4,877 GBP
Retailer 16£5,392 GBP
Retailer 11£5,465 GBP
Retailer 14£5,508 GBP
Retailer 15£6,145 GBP
Retailer 12£6,542 GBP
Retailer 5£8,937 GBP
With Clarity£9,438 GBP

30 data points across 17 retailers

17 retailers£2,138 GBP to £9,438 GBP

A
Cheapest Retailer
-
£2,138 GBP
Retailer 2
-
£2,567 GBP
$3,440 USD
View
Price last confirmed 19 days ago
A
Retailer 3
-
£2,598 GBP
$3,481 USD
View
A
Retailer 4
-
£2,687 GBP
$3,600 USD
View
A
Retailer 5
-
£2,716 GBP
$3,639 USD
View
Final sale: no returns
A
Retailer 6
-
£3,469 GBP
View
A
Retailer 7
-
£3,668 GBP
$4,915 USD
View
A
Retailer 8
-
£4,076 GBP
€5,201 EUR
View
A
Retailer 9
-
£4,425 GBP
View
A
Retailer 10
-
£4,877 GBP
$6,534 USD
View
Retailer 11
-
£5,392 GBP
$7,225 USD
View
Price last confirmed 13 days ago
A
Retailer 12
-
£5,465 GBP
ZAR 118,286 ZAR
View
Retailer 13
-
£5,508 GBP
A$11,355 AUD
View
Price last confirmed 10 days ago
A
Retailer 14
-
£6,145 GBP
$8,234 USD
View
A
Retailer 15
-
£6,542 GBP
View
B+
Retailer 16
-
£8,937 GBP
$11,974 USD
View
Most Expensive
B+
With Clarity
819642918 · Oct 31
£9,438 GBP
$12,646 USD
View
16 more retailers have this diamond
Prices start from £2,138 GBPSave up to £7,300 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
4.59ct Cushion
£2,138 GBP