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Cushion|Lab Grown|IGI

1.80ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG846664593

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG846664593

Diamond specifications and retailer prices

From £509 GBP
As of October 30, 2026
Save £4,492 GBP (90%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £5,000 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.8ct lab-grown cushion diamond

This 1.8ct 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 LG846664593 or 846664593. Listed at 4 retailers as of October 30, 2026, with prices from £509 to £5,000, a £4,492 spread on the same certified stone. Brilliant Earth lists it at £5,000. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.80
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.1°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846664593
Dimensions8.77 × 6.37 × 4.11 mm
L/W Ratio1.38
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
8.77 mm6.37 mm1.80 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846664593
Side View
Table 61.0%Crown 31.1°Girdle: MED-THKPavilion 34.9°Culet: NoneDepth 64.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £5,000 GBP|Low: £509 GBP|High: £5,000 GBP|Avg: £2,564 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
October 31, 2026
Retailer 4£509 GBP
Retailer 3£1,673 GBP
Retailer 2£3,586 GBP
Brilliant Earth£5,000 GBP

2 data points across 4 retailers

4 retailers£509 GBP to £5,000 GBP

A
Cheapest Retailer
-
£509 GBP
B+
Retailer 2
-
£1,673 GBP
$2,241 USD
View
B
Retailer 3
-
£3,586 GBP
$4,805 USD
View
Most Expensive
B
Brilliant Earth
22370008A · Oct 30
£5,000 GBP
$6,700 USD
View
3 more retailers have this diamond
Prices start from £509 GBPSave up to £4,492 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
1.80ct Cushion
£509 GBP