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Cushion|Lab Grown|IGI

1.87ct D IF Cushion Lab Grown Diamond

VG • D/IF • IGI LG825634211

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG825634211

Diamond specifications and retailer prices

From £475 GBP
$636 USD
As of October 30, 2026
Save £2,406 GBP (84%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £2,881 GBP at Brilliant Earth · As of October 31, 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 very-good cut grade and certified by IGI LG825634211 or 825634211. Listed at 16 retailers as of October 30, 2026, with prices from £475 to £2,881, a £2,406 spread on the same certified stone. Brilliant Earth lists it at £2,881. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.87
Carat
D
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle37.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825634211
Dimensions9.31 × 6.19 × 4.20 mm
L/W Ratio1.50
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
9.31 mm6.19 mm1.87 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825634211
Side View
Table 62.0%Crown 33.1°Girdle: STK-THKPavilion 37.7°Culet: NoneDepth 67.9%

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: £418 GBP|High: £3,426 GBP|Avg: £1,194 GBP|-15.9%
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
October 31, 2026
Retailer 4£418 GBP
Retailer 6£475 GBP
Retailer 14£631 GBP
Retailer 2£654 GBP
Retailer 3£655 GBP
Retailer 7£691 GBP
Retailer 9£718 GBP
Retailer 12£971 GBP
Retailer 8£973 GBP
Retailer 13£1,455 GBP
Retailer 10£1,536 GBP
Retailer 5£1,732 GBP
Retailer 11£2,601 GBP
Brilliant Earth£2,881 GBP

42 data points across 14 retailers

16 retailers£475 GBP to £2,881 GBP

Retailer 1
-
£418 GBP
$560 USD
Price last confirmed 15 days ago
A
Retailer 2
-
£475 GBP
$636 USD
View
Final sale: no returns
A
Retailer 3
-
£631 GBP
$845 USD
View
A
Retailer 4
-
£654 GBP
€834 EUR
View
A
Retailer 5
-
£655 GBP
$877 USD
View
A
Retailer 6
-
£691 GBP
View
A
Retailer 7
-
£718 GBP
ZAR 15,541 ZAR
View
A
Retailer 8
-
£971 GBP
$1,301 USD
View
A
Retailer 9
-
£973 GBP
A$2,005 AUD
View
A
Retailer 10
-
£1,147 GBP
$1,537 USD
View
B+
Retailer 11
-
£1,367 GBP
$1,831 USD
View
B+
Retailer 12
-
£1,455 GBP
$1,950 USD
View
B+
Retailer 13
-
£1,536 GBP
View
B+
Retailer 14
-
£1,732 GBP
SGD 3,136 SGD
View
Retailer 15
-
£2,601 GBP
$3,485 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
21418720A · Oct 31
£2,881 GBP
$3,860 USD
View
15 more retailers have this diamond
Prices start from £475 GBPSave up to £2,406 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
£475 GBP