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Cushion|Lab Grown|IGI

1.87ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG839684885

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG839684885

Diamond specifications and retailer prices

From £1,077 GBP
As of October 30, 2026
Save £3,806 GBP (78%) vs most expensive(unlock to see where)
21 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 top-tier cut grade and certified by IGI LG839684885 or 839684885. Listed at 21 retailers as of October 29, 2026, with prices from £1,077 to £4,883, a £3,806 spread on the same certified stone. Riddles Jewelry lists it at £4,883. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839684885
Dimensions8.89 × 6.58 × 4.18 mm
L/W Ratio1.35
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
8.89 mm6.58 mm1.87 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839684885
Side View
Table 61.0%Crown 35.3°Girdle: MED-STKPavilion 35.9°Culet: NoneDepth 63.5%

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: £1,077 GBP|Low: £950 GBP|High: £4,883 GBP|Avg: £2,303 GBP|-1.0%
Retailer 1
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Retailer 20
Riddles Jewelry
October 30, 2026
Retailer 19£950 GBP
Retailer 1£1,077 GBP
Retailer 17£1,078 GBP
Retailer 5£1,079 GBP
Retailer 9£1,165 GBP
Retailer 3£1,310 GBP
Retailer 18£1,322 GBP
Retailer 12£1,377 GBP
Retailer 14£1,454 GBP
Retailer 11£1,626 GBP
Retailer 15£1,747 GBP
Retailer 8£2,327 GBP
Retailer 20£2,535 GBP
Retailer 4£2,627 GBP
Retailer 7£2,881 GBP
Retailer 2£3,029 GBP
Retailer 16£3,227 GBP
Retailer 6£3,322 GBP
Retailer 10£3,983 GBP
Retailer 13£4,582 GBP
Riddles Jewelry£4,883 GBP

28 data points across 21 retailers

21 retailers£1,077 GBP to £4,883 GBP

Retailer 1
-
£950 GBP
$1,273 USD
Price last confirmed 14 days ago
A
Retailer 2
-
£1,077 GBP
View
A
Retailer 3
-
£1,078 GBP
$1,445 USD
View
A
Retailer 4
-
£1,079 GBP
$1,446 USD
View
Final sale: no returns
A
Retailer 5
-
£1,165 GBP
$1,561 USD
View
A
Retailer 6
-
£1,310 GBP
$1,755 USD
View
A
Retailer 7
-
£1,322 GBP
$1,772 USD
View
A
Retailer 8
-
£1,377 GBP
View
B+
Retailer 9
-
£1,454 GBP
€1,856 EUR
View
B+
Retailer 10
-
£1,626 GBP
$2,178 USD
View
B+
Retailer 11
-
£1,747 GBP
ZAR 37,815 ZAR
View
B+
Retailer 12
-
£2,327 GBP
$3,118 USD
View
B+
Retailer 13
-
£2,535 GBP
$3,396 USD
View
B
Retailer 14
-
£2,627 GBP
View
B
Retailer 15
-
£2,881 GBP
CA$5,361 CAD
View
B
Retailer 16
-
£3,029 GBP
$4,058 USD
View
B+
Retailer 17
-
£3,227 GBP
View
B
Retailer 18
-
£3,322 GBP
$4,451 USD
View
B
Retailer 19
-
£3,983 GBP
$5,337 USD
View
B
Retailer 20
-
£4,582 GBP
$6,140 USD
View
Most Expensive
B
Riddles Jewelry
1987846133 · Oct 29
£4,883 GBP
$6,543 USD
View
20 more retailers have this diamond
Prices start from £1,077 GBPSave up to £3,806 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
£1,077 GBP