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Cushion|Lab Grown|IGI

4.04ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG681578637

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG681578637

Diamond specifications and retailer prices

From £2,422 GBP
$3,245 USD
As of October 30, 2026
Save £10,509 GBP (81%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £12,931 GBP at With Clarity · As of October 30, 2026
View at With Clarity

About this 4.04ct lab-grown cushion diamond

This 4.04ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG681578637 or 681578637. Listed at 21 retailers as of October 30, 2026, with prices from £2,422 to £12,931, a £10,509 spread on the same certified stone. With Clarity lists it at £12,931. 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

4.04
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG681578637
Dimensions10.47 × 8.73 × 5.71 mm
L/W Ratio1.20
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
10.47 mm8.73 mm4.04 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG681578637
Side View
Table 60.0%Crown 33.9°Girdle: STK-VTKPavilion 36.4°Culet: NoneDepth 65.4%

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 30
Current: £8,060 GBP|Low: £2,422 GBP|High: £13,927 GBP|Avg: £6,050 GBP|-18.9%
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
Retailer 17
With Clarity
October 30, 2026
Retailer 10£2,422 GBP
Retailer 9£2,694 GBP
Retailer 5£2,851 GBP
Retailer 17£3,057 GBP
Retailer 13£3,391 GBP
Retailer 2£4,023 GBP
Retailer 7£4,138 GBP
Retailer 15£4,334 GBP
Retailer 16£5,342 GBP
Retailer 4£5,882 GBP
Retailer 3£6,969 GBP
Retailer 11£6,978 GBP
Retailer 8£7,217 GBP
Retailer 1£8,060 GBP
Retailer 14£8,742 GBP
Retailer 12£8,855 GBP
Retailer 6£11,521 GBP
With Clarity£12,931 GBP

35 data points across 18 retailers

21 retailers£2,422 GBP to £12,931 GBP

A
Cheapest Retailer
-
£2,422 GBP
$3,245 USD
Final sale: no returns
A
Retailer 2
-
£2,694 GBP
$3,610 USD
View
A
Retailer 3
-
£2,851 GBP
$3,820 USD
View
A
Retailer 4
-
£3,057 GBP
HK$32,000 HKD
View
A
Retailer 5
-
£3,391 GBP
View
Retailer 6
-
£3,713 GBP
View
Price last confirmed 15 days ago
A
Retailer 7
-
£4,014 GBP
$5,378 USD
View
A
Retailer 8
-
£4,023 GBP
€5,134 EUR
View
A
Retailer 9
-
£4,138 GBP
$5,545 USD
View
A
Retailer 10
-
£4,334 GBP
View
Retailer 11
-
£5,098 GBP
$6,831 USD
View
Price last confirmed 95 days ago
A
Retailer 12
-
£5,342 GBP
ZAR 115,629 ZAR
View
Retailer 13
-
£5,882 GBP
A$12,124 AUD
View
Price last confirmed 8 days ago
B+
Retailer 14
-
£6,969 GBP
View
B+
Retailer 15
-
£6,978 GBP
$9,349 USD
View
B+
Retailer 16
-
£7,217 GBP
$9,670 USD
View
B+
Retailer 17
-
£8,060 GBP
$10,800 USD
View
B+
Retailer 18
-
£8,742 GBP
$11,714 USD
View
B+
Retailer 19
-
£8,855 GBP
SGD 16,034 SGD
View
Retailer 20
-
£11,521 GBP
A$23,749 AUD
View
Price last confirmed 21 days ago
Most Expensive
B
With Clarity
681578637 · Oct 30
£12,931 GBP
$17,326 USD
View
20 more retailers have this diamond
Prices start from £2,422 GBPSave up to £10,509 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
4.04ct Cushion
£2,422 GBP