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Cushion|Lab Grown|IGI

4.25ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG689566676

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG689566676

Diamond specifications and retailer prices

From £2,418 GBP
$3,240 USD
As of October 31, 2026
Save £11,844 GBP (83%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £14,262 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 4.25ct lab-grown cushion diamond

This 4.25ct 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 LG689566676 or 689566676. Listed at 20 retailers as of October 31, 2026, with prices from £2,418 to £14,262, a £11,844 spread on the same certified stone. Do Amore Diamonds lists it at £14,262. 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

4.25
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG689566676
Dimensions11.03 × 8.75 × 5.63 mm
L/W Ratio1.26
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
11.03 mm8.75 mm4.25 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG689566676
Side View
Table 63.0%Crown 34.4°Girdle: MED-STKPavilion 35.4°Culet: NoneDepth 64.3%

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 31
Current: £14,262 GBP|Low: £2,322 GBP|High: £14,262 GBP|Avg: £5,908 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
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Retailer 11
Retailer 12
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Retailer 19
October 31, 2026
Retailer 14£2,418 GBP
Retailer 16£2,443 GBP
Retailer 12£2,696 GBP
Retailer 6£3,305 GBP
Retailer 13£3,518 GBP
Retailer 15£3,533 GBP
Retailer 2£4,244 GBP
Retailer 11£4,400 GBP
Retailer 4£4,584 GBP
Retailer 9£5,172 GBP
Retailer 5£5,648 GBP
Retailer 8£6,252 GBP
Retailer 18£6,621 GBP
Retailer 7£7,382 GBP
Retailer 3£9,248 GBP
Retailer 10£9,429 GBP
Retailer 19£9,563 GBP
Retailer 17£9,934 GBP
Do Amore Diamonds£14,262 GBP

38 data points across 19 retailers

20 retailers£2,418 GBP to £14,262 GBP

A
Cheapest Retailer
-
£2,418 GBP
$3,240 USD
A
Retailer 2
-
£2,443 GBP
$3,273 USD
View
A
Retailer 3
-
£2,696 GBP
$3,613 USD
View
Final sale: no returns
A
Retailer 4
-
£3,305 GBP
HK$34,600 HKD
View
A
Retailer 5
-
£3,518 GBP
View
A
Retailer 6
-
£3,533 GBP
$4,734 USD
View
A
Retailer 7
-
£4,244 GBP
€5,416 EUR
View
A
Retailer 8
-
£4,400 GBP
$5,895 USD
View
A
Retailer 9
-
£4,584 GBP
View
Retailer 10
-
£5,172 GBP
$6,930 USD
View
Price last confirmed 13 days ago
A
Retailer 11
-
£5,648 GBP
ZAR 122,263 ZAR
View
Retailer 12
-
£6,252 GBP
A$12,888 AUD
View
Price last confirmed 9 days ago
B+
Retailer 13
-
£6,621 GBP
$8,871 USD
View
B+
Retailer 14
-
£7,382 GBP
View
B+
Retailer 15
-
£7,676 GBP
$10,285 USD
View
B+
Retailer 16
-
£9,248 GBP
$12,391 USD
View
Retailer 17
-
£9,429 GBP
A$19,437 AUD
View
Price last confirmed 23 days ago
B+
Retailer 18
-
£9,563 GBP
SGD 17,315 SGD
View
B+
Retailer 19
-
£9,934 GBP
$13,310 USD
View
Most Expensive
B
Do Amore Diamonds
27-CFF249A6B · Oct 31
£14,262 GBP
$19,110 USD
View
19 more retailers have this diamond
Prices start from £2,418 GBPSave up to £11,844 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
4.25ct Cushion
£2,418 GBP