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Cushion|Lab Grown|IGI

2.85ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG818680070

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG818680070

Diamond specifications and retailer prices

From £993 GBP
$1,331 USD
As of October 30, 2026
Save £6,754 GBP (87%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £7,747 GBP at Brilliant Earth · As of October 26, 2026
View at Brilliant Earth

About this 2.85ct lab-grown cushion diamond

This 2.85ct lab-grown cushion sits in the two to three carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818680070 or 818680070. Listed at 7 retailers as of October 26, 2026, with prices from £993 to £7,747, a £6,754 spread on the same certified stone. Brilliant Earth lists it at £7,747. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

2.85
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle32.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818680070
Dimensions9.11 × 7.33 × 4.92 mm
L/W Ratio1.24
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
9.11 mm7.33 mm2.85 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818680070
Side View
Table 63.0%Crown 34.6°Girdle: STK-THKPavilion 32.9°CuletDepth 67.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £7,747 GBP|Low: £993 GBP|High: £7,993 GBP|Avg: £2,837 GBP|+27.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 31, 2026
Retailer 4£993 GBP
Retailer 3£1,343 GBP
Retailer 2£1,399 GBP
Retailer 5£1,619 GBP
Retailer 7£2,053 GBP
Retailer 6£2,898 GBP
Brilliant Earth£7,747 GBP

31 data points across 7 retailers

7 retailers£993 GBP to £7,747 GBP

A
Cheapest Retailer
-
£993 GBP
$1,331 USD
A
Retailer 2
-
£1,343 GBP
$1,800 USD
View
A
Retailer 3
-
£1,399 GBP
$1,874 USD
View
A
Retailer 4
-
£1,619 GBP
€2,066 EUR
View
Retailer 5
-
£2,053 GBP
A$4,233 AUD
View
Price last confirmed 9 days ago
A
Retailer 6
-
£2,898 GBP
View
Most Expensive
B
Brilliant Earth
21107885A · Oct 26
£7,747 GBP
$10,380 USD
View
6 more retailers have this diamond
Prices start from £993 GBPSave up to £6,754 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
2.85ct Cushion
£993 GBP