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Cushion|Lab Grown|IGI

0.90ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG815698158

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG815698158

Diamond specifications and retailer prices

From £419 GBP
As of November 3, 2026
Save £1,047 GBP (71%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,467 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 0.9ct lab-grown cushion diamond

This 0.9ct lab-grown cushion sits in the just-under-one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG815698158 or 815698158. Listed at 15 retailers as of November 3, 2026, with prices from £419 to £1,467, a £1,047 spread on the same certified stone. Brilliant Earth lists it at £1,467. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.90
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle38.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG815698158
Dimensions7.12 × 4.79 × 3.22 mm
L/W Ratio1.49
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
7.12 mm4.79 mm0.90 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG815698158
Side View
Table 60.0%Crown 33.6°Girdle: MED-THKPavilion 38.1°Culet: NoneDepth 67.2%

Caratlytics Score

How it works →
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: Nov 3
Current: £1,467 GBP|Low: £388 GBP|High: £1,511 GBP|Avg: £901 GBP|-2.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 4, 2026
Retailer 3£388 GBP
Retailer 2£473 GBP
Retailer 13£479 GBP
Retailer 11£612 GBP
Retailer 6£633 GBP
Retailer 7£704 GBP
Retailer 8£741 GBP
Retailer 10£796 GBP
Retailer 12£1,129 GBP
Retailer 4£1,271 GBP
Retailer 5£1,284 GBP
Retailer 9£1,431 GBP
Brilliant Earth£1,467 GBP

41 data points across 13 retailers

15 retailers£419 GBP to £1,467 GBP

Retailer 1
-
£388 GBP
Price last confirmed 10 days ago
A
Retailer 2
-
£419 GBP
View
Final sale: no returns
A
Retailer 3
-
£473 GBP
View
A
Retailer 4
-
£479 GBP
View
A
Retailer 5
-
£612 GBP
View
A
Retailer 6
-
£633 GBP
View
A
Retailer 7
-
£704 GBP
View
B+
Retailer 8
-
£741 GBP
View
Retailer 9
-
£793 GBP
View
Price last confirmed 21 days ago
Retailer 10
-
£796 GBP
View
Price last confirmed 16 days ago
B+
Retailer 11
-
£1,129 GBP
View
B
Retailer 12
-
£1,271 GBP
View
B
Retailer 13
-
£1,284 GBP
View
B
Retailer 14
-
£1,431 GBP
View
Most Expensive
B
Brilliant Earth
21422965A · Nov 4
£1,467 GBP
$1,980 USD
View
14 more retailers have this diamond
Prices start from £419 GBPSave up to £1,047 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
0.90ct Cushion
£419 GBP