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Cushion|Lab Grown|IGI

1.87ct D FL Cushion Lab Grown Diamond

VG • D/FL • IGI LG833637874

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG833637874

Diamond specifications and retailer prices

From £1,078 GBP
$1,445 USD
As of October 31, 2026
Save £3,805 GBP (78%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £4,883 GBP at Riddles Jewelry · As of October 29, 2026
View at Riddles Jewelry

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 FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG833637874 or 833637874. Listed at 19 retailers as of October 29, 2026, with prices from £1,078 to £4,883, a £3,805 spread on the same certified stone. Riddles Jewelry lists it at £4,883. 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
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG833637874
Dimensions8.86 × 6.36 × 4.27 mm
L/W Ratio1.39
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
8.86 mm6.36 mm1.87 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG833637874
Side View
Table 63.0%Crown 36.5°Girdle: MED-STKPavilion 39.2°Culet: NoneDepth 67.1%

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 31
Current: £1,366 GBP|Low: £950 GBP|High: £4,905 GBP|Avg: £2,429 GBP|-3.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
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Retailer 16
Retailer 17
Retailer 18
Riddles Jewelry
October 31, 2026
Retailer 16£950 GBP
Retailer 14£1,078 GBP
Retailer 18£1,079 GBP
Retailer 3£1,310 GBP
Retailer 15£1,322 GBP
Retailer 1£1,366 GBP
Retailer 11£1,454 GBP
Retailer 2£1,626 GBP
Retailer 12£1,747 GBP
Retailer 6£2,327 GBP
Retailer 17£2,535 GBP
Retailer 5£2,627 GBP
Retailer 4£2,881 GBP
Retailer 8£3,029 GBP
Retailer 13£3,227 GBP
Retailer 9£3,322 GBP
Retailer 7£3,983 GBP
Retailer 10£4,491 GBP
Riddles Jewelry£4,883 GBP

39 data points across 19 retailers

19 retailers£1,078 GBP to £4,883 GBP

Retailer 1
-
£950 GBP
$1,273 USD
Price last confirmed 14 days ago
A
Retailer 2
-
£1,078 GBP
$1,445 USD
View
A
Retailer 3
-
£1,079 GBP
$1,446 USD
View
Final sale: no returns
A
Retailer 4
-
£1,310 GBP
$1,755 USD
View
B+
Retailer 5
-
£1,322 GBP
$1,772 USD
View
B+
Retailer 6
-
£1,366 GBP
View
B+
Retailer 7
-
£1,454 GBP
€1,856 EUR
View
B+
Retailer 8
-
£1,626 GBP
$2,178 USD
View
B+
Retailer 9
-
£1,747 GBP
ZAR 37,815 ZAR
View
B+
Retailer 10
-
£2,327 GBP
$3,118 USD
View
B+
Retailer 11
-
£2,535 GBP
$3,396 USD
View
B
Retailer 12
-
£2,627 GBP
View
B
Retailer 13
-
£2,881 GBP
CA$5,361 CAD
View
B
Retailer 14
-
£3,029 GBP
$4,058 USD
View
B
Retailer 15
-
£3,227 GBP
View
B
Retailer 16
-
£3,322 GBP
$4,451 USD
View
B
Retailer 17
-
£3,983 GBP
$5,337 USD
View
B
Retailer 18
-
£4,582 GBP
$6,140 USD
View
Most Expensive
B
Riddles Jewelry
1983038926 · Oct 29
£4,883 GBP
$6,543 USD
View
18 more retailers have this diamond
Prices start from £1,078 GBPSave up to £3,805 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
£1,078 GBP