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Cushion|Lab Grown|IGI

1.86ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG794625116

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

Certificate IGI LG794625116

Diamond specifications and retailer prices

From £1,232 GBP
$1,651 USD
As of October 31, 2026
Save £1,858 GBP (60%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £3,090 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.86ct lab-grown cushion diamond

This 1.86ct 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 LG794625116 or 794625116. Listed at 5 retailers as of October 30, 2026, with prices from £1,232 to £3,090, a £1,858 spread on the same certified stone. Brilliant Earth lists it at £3,090. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.86
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle38.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG794625116
Dimensions7.05 × 6.94 × 4.62 mm
L/W Ratio1.02
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
7.05 mm6.94 mm1.86 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG794625116
Side View
Table 65.0%Crown 33°Girdle: MED-THKPavilion 38.4°Culet: NoneDepth 66.6%

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: £3,090 GBP|Low: £702 GBP|High: £5,329 GBP|Avg: £2,205 GBP|-32.0%
Brilliant Earth
Retailer 2
Retailer 3
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Retailer 12
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Retailer 17
October 31, 2026
Retailer 16£702 GBP
Retailer 11£794 GBP
Retailer 2£1,232 GBP
Retailer 5£1,291 GBP
Retailer 9£1,359 GBP
Retailer 17£1,463 GBP
Retailer 14£1,511 GBP
Retailer 3£1,590 GBP
Retailer 13£1,693 GBP
Retailer 6£2,076 GBP
Retailer 7£2,434 GBP
Retailer 10£2,672 GBP
Retailer 15£2,914 GBP
Retailer 8£3,077 GBP
Brilliant Earth£3,090 GBP
Retailer 4£3,129 GBP
Retailer 12£3,687 GBP

19 data points across 17 retailers

5 retailers£1,232 GBP to £3,090 GBP

Retailer 1
-
£794 GBP
$1,064 USD
Price last confirmed 19 days ago
A
Retailer 2
-
£1,232 GBP
$1,651 USD
View
Retailer 3
-
£2,672 GBP
$3,580 USD
View
Price last confirmed 10 days ago
Retailer 4
-
£2,914 GBP
View
Price last confirmed 25 days ago
Most Expensive
B
Brilliant Earth
21414001Y · Oct 30
£3,090 GBP
$4,140 USD
View
4 more retailers have this diamond
Prices start from £1,232 GBPSave up to £1,858 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
1.86ct Cushion
£1,232 GBP