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Cushion|Lab Grown|IGI

1.87ct D IF Cushion Lab Grown Diamond

EX • D/IF • IGI LG786648222

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG786648222

Diamond specifications and retailer prices

From £355 GBP
$476 USD
As of October 30, 2026
Save £2,526 GBP (88%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £2,881 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.87ct lab-grown cushion diamond

This 1.87ct 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 LG786648222 or 786648222. Listed at 19 retailers as of October 30, 2026, with prices from £355 to £2,881, a £2,526 spread on the same certified stone. Brilliant Earth lists it at £2,881. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.87
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786648222
Dimensions8.87 × 6.30 × 4.29 mm
L/W Ratio1.41
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
8.87 mm6.30 mm1.87 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786648222
Side View
Table 59.0%Crown 36.1°Girdle: MED-STKPavilion 35.1°Culet: NoneDepth 68.1%

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: £2,881 GBP|Low: £355 GBP|High: £4,067 GBP|Avg: £1,356 GBP|-29.2%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
October 31, 2026
Retailer 7£355 GBP
Retailer 17£597 GBP
Retailer 8£622 GBP
Retailer 2£628 GBP
Retailer 5£640 GBP
Retailer 11£650 GBP
Retailer 14£678 GBP
Retailer 12£918 GBP
Retailer 16£933 GBP
Retailer 6£1,140 GBP
Retailer 9£1,254 GBP
Retailer 4£1,292 GBP
Retailer 13£1,456 GBP
Retailer 3£1,476 GBP
Retailer 10£2,391 GBP
Retailer 15£2,526 GBP
Brilliant Earth£2,881 GBP

42 data points across 17 retailers

19 retailers£355 GBP to £2,881 GBP

A
Cheapest Retailer
-
£355 GBP
$476 USD
Final sale: no returns
A
Retailer 2
-
£597 GBP
$800 USD
View
A
Retailer 3
-
£622 GBP
$833 USD
View
A
Retailer 4
-
£628 GBP
€801 EUR
View
A
Retailer 5
-
£640 GBP
$858 USD
View
A
Retailer 6
-
£650 GBP
View
A
Retailer 7
-
£678 GBP
ZAR 14,666 ZAR
View
A
Retailer 8
-
£918 GBP
A$1,893 AUD
View
A
Retailer 9
-
£933 GBP
$1,250 USD
View
A
Retailer 10
-
£1,140 GBP
$1,528 USD
View
A
Retailer 11
-
£1,254 GBP
SGD 2,271 SGD
View
B+
Retailer 12
-
£1,292 GBP
$1,731 USD
View
B+
Retailer 13
-
£1,376 GBP
$1,844 USD
View
B+
Retailer 14
-
£1,456 GBP
View
B+
Retailer 15
-
£1,476 GBP
$1,978 USD
View
Retailer 16
-
£1,899 GBP
View
Price last confirmed 23 days ago
B
Retailer 17
-
£2,391 GBP
A$4,928 AUD
View
Retailer 18
-
£2,526 GBP
$3,385 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
18398244A · Oct 30
£2,881 GBP
$3,860 USD
View
18 more retailers have this diamond
Prices start from £355 GBPSave up to £2,526 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
1.87ct Cushion
£355 GBP