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Cushion|Lab Grown|IGI

1.86ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG744513209

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG744513209

Diamond specifications and retailer prices

From £381 GBP
$511 USD
As of October 30, 2026
Save £2,425 GBP (86%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £2,806 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.86ct lab-grown cushion diamond

This 1.86ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG744513209 or 744513209. Listed at 13 retailers as of October 30, 2026, with prices from £381 to £2,806, a £2,425 spread on the same certified stone. Brilliant Earth lists it at £2,806. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.86
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG744513209
Dimensions8.21 × 8.21 × 6.39 mm
L/W Ratio1.00
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
8.21 mm8.21 mm1.86 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG744513209
Side View
Table 62.0%Crown 33.6°Girdle: STK-THKPavilion 41°Culet: NoneDepth 72.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £2,806 GBP|Low: £272 GBP|High: £4,135 GBP|Avg: £1,450 GBP|-32.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 5£381 GBP
Retailer 8£494 GBP
Retailer 3£534 GBP
Retailer 10£585 GBP
Retailer 2£637 GBP
Retailer 4£893 GBP
Retailer 7£949 GBP
Retailer 12£1,092 GBP
Retailer 11£1,499 GBP
Retailer 6£2,375 GBP
Retailer 13£2,444 GBP
Retailer 9£2,642 GBP
Brilliant Earth£2,806 GBP

28 data points across 13 retailers

13 retailers£381 GBP to £2,806 GBP

A
Cheapest Retailer
-
£381 GBP
$511 USD
Final sale: no returns
A
Retailer 2
-
£494 GBP
$662 USD
View
A
Retailer 3
-
£534 GBP
$715 USD
View
A
Retailer 4
-
£585 GBP
$784 USD
View
A
Retailer 5
-
£637 GBP
€813 EUR
View
A
Retailer 6
-
£893 GBP
$1,196 USD
View
A
Retailer 7
-
£949 GBP
A$1,957 AUD
View
A
Retailer 8
-
£1,092 GBP
$1,463 USD
View
B+
Retailer 9
-
£1,499 GBP
View
B+
Retailer 10
-
£2,375 GBP
A$4,895 AUD
View
Retailer 11
-
£2,444 GBP
$3,275 USD
View
Price last confirmed 10 days ago
B
Retailer 12
-
£2,642 GBP
$3,540 USD
View
Most Expensive
B
Brilliant Earth
16861062Y · Oct 30
£2,806 GBP
$3,760 USD
View
12 more retailers have this diamond
Prices start from £381 GBPSave up to £2,425 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
1.86ct Cushion
£381 GBP