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Cushion|Lab Grown|IGI

1.87ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG744513210

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG744513210

Diamond specifications and retailer prices

From £382 GBP
$512 USD
As of October 30, 2026
Save £2,476 GBP (87%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £2,858 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 LG744513210 or 744513210. Listed at 13 retailers as of October 30, 2026, with prices from £382 to £2,858, a £2,476 spread on the same certified stone. Brilliant Earth lists it at £2,858. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG744513210
Dimensions7.23 × 7.19 × 4.75 mm
L/W Ratio1.01
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
7.23 mm7.19 mm1.87 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG744513210
Side View
Table 62.0%Crown 34.1°Girdle: STK-THKPavilion 40.4°Culet: NoneDepth 66.1%

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: £2,858 GBP|Low: £382 GBP|High: £3,411 GBP|Avg: £1,408 GBP|-16.2%
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
October 31, 2026
Retailer 5£382 GBP
Retailer 8£496 GBP
Retailer 3£534 GBP
Retailer 10£588 GBP
Retailer 2£639 GBP
Retailer 4£902 GBP
Retailer 7£954 GBP
Retailer 11£1,096 GBP
Retailer 13£1,544 GBP
Retailer 6£2,391 GBP
Retailer 12£2,444 GBP
Retailer 9£2,657 GBP
Brilliant Earth£2,858 GBP

31 data points across 13 retailers

13 retailers£382 GBP to £2,858 GBP

A
Cheapest Retailer
-
£382 GBP
$512 USD
Final sale: no returns
A
Retailer 2
-
£496 GBP
$664 USD
View
A
Retailer 3
-
£534 GBP
$715 USD
View
A
Retailer 4
-
£588 GBP
$788 USD
View
A
Retailer 5
-
£639 GBP
€816 EUR
View
A
Retailer 6
-
£902 GBP
$1,208 USD
View
A
Retailer 7
-
£954 GBP
A$1,967 AUD
View
A
Retailer 8
-
£1,096 GBP
$1,469 USD
View
Retailer 9
-
£1,544 GBP
View
Price last confirmed 10 days ago
B+
Retailer 10
-
£2,391 GBP
A$4,928 AUD
View
Retailer 11
-
£2,444 GBP
$3,275 USD
View
Price last confirmed 10 days ago
B
Retailer 12
-
£2,657 GBP
$3,560 USD
View
Most Expensive
B
Brilliant Earth
16861148Y · Oct 30
£2,858 GBP
$3,830 USD
View
12 more retailers have this diamond
Prices start from £382 GBPSave up to £2,476 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
£382 GBP