CaratHunter
Plans
Cushion|Lab Grown|IGI

4.12ct E FL Cushion Lab Grown Diamond

EX • E/FL • IGI LG821638855

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG821638855

Diamond specifications and retailer prices

From £2,888 GBP
$3,870 USD
As of October 31, 2026
Save £13,747 GBP (83%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £16,636 GBP at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 4.12ct lab-grown cushion diamond

This 4.12ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG821638855 or 821638855. Listed at 10 retailers as of October 30, 2026, with prices from £2,888 to £16,636, a £13,747 spread on the same certified stone. Do Amore Diamonds lists it at £16,636. 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

4.12
Carat
E
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle38.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821638855
Dimensions10.92 × 8.42 × 5.68 mm
L/W Ratio1.30
Girdle conditionFaceted
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
10.92 mm8.42 mm4.12 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821638855
Side View
Table 59.0%Crown 33.4°Girdle: STK-THKPavilion 38.9°Culet: NoneDepth 67.5%

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: £16,636 GBP|Low: £2,922 GBP|High: £24,228 GBP|Avg: £8,691 GBP|-3.5%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 6£2,922 GBP
Retailer 7£3,209 GBP
Retailer 4£3,510 GBP
Retailer 8£4,512 GBP
Retailer 5£5,304 GBP
Retailer 10£6,157 GBP
Retailer 11£6,871 GBP
Retailer 9£6,883 GBP
Retailer 2£8,948 GBP
Do Amore Diamonds£16,636 GBP
Retailer 3£19,448 GBP

26 data points across 11 retailers

10 retailers£2,888 GBP to £16,636 GBP

A
Cheapest Retailer
-
£2,888 GBP
$3,870 USD
A
Retailer 2
-
£2,922 GBP
$3,915 USD
View
A
Retailer 3
-
£3,510 GBP
$4,703 USD
View
A
Retailer 4
-
£4,512 GBP
$6,046 USD
View
A
Retailer 5
-
£5,304 GBP
€6,768 EUR
View
Retailer 6
-
£6,157 GBP
$8,250 USD
View
Price last confirmed 16 days ago
Retailer 7
-
£6,871 GBP
$9,207 USD
View
Price last confirmed 13 days ago
B+
Retailer 8
-
£6,883 GBP
View
B+
Retailer 9
-
£8,948 GBP
$11,990 USD
View
Most Expensive
B
Do Amore Diamonds
27-D7A519999 · Oct 30
£16,636 GBP
$22,290 USD
View
9 more retailers have this diamond
Prices start from £2,888 GBPSave up to £13,747 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
4.12ct Cushion
£2,888 GBP