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Cushion|Lab Grown|IGI

0.91ct D IF Cushion Lab Grown Diamond

EX • D/IF • IGI LG790605623

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG790605623

Diamond specifications and retailer prices

From £157 GBP
As of November 5, 2026
Save £1,017 GBP (87%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,174 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 0.91ct lab-grown cushion diamond

This 0.91ct lab-grown cushion sits in the just-under-one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG790605623 or 790605623. Listed at 16 retailers as of November 4, 2026, with prices from £157 to £1,174, a £1,017 spread on the same certified stone. Brilliant Earth lists it at £1,174. 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

0.91
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle37°
OriginLab Grown
Grading LabIGI
CertificateIGI LG790605623
Dimensions6.72 × 5.00 × 3.34 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizePointed
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
6.72 mm5.00 mm0.91 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG790605623
Side View
Table 56.0%Crown 35.7°Girdle: MED-THKPavilion 37°Culet: NoneDepth 66.8%

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: Nov 5
Current: £1,174 GBP|Low: £157 GBP|High: £1,207 GBP|Avg: £580 GBP
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
Retailer 14
Retailer 15
Retailer 16
November 5, 2026
Retailer 9£157 GBP
Retailer 2£212 GBP
Retailer 3£218 GBP
Retailer 11£311 GBP
Retailer 16£357 GBP
Retailer 6£368 GBP
Retailer 4£387 GBP
Retailer 14£396 GBP
Retailer 5£437 GBP
Retailer 10£486 GBP
Retailer 12£546 GBP
Retailer 13£580 GBP
Retailer 7£740 GBP
Retailer 8£854 GBP
Retailer 15£874 GBP
Brilliant Earth£1,174 GBP

32 data points across 16 retailers

16 retailers£157 GBP to £1,174 GBP

A
Cheapest Retailer
-
£157 GBP
Final sale: no returns
A
Retailer 2
-
£212 GBP
View
Retailer 3
-
£218 GBP
View
Price last confirmed 11 days ago
A
Retailer 4
-
£311 GBP
View
A
Retailer 5
-
£357 GBP
View
A
Retailer 6
-
£368 GBP
View
A
Retailer 7
-
£387 GBP
View
A
Retailer 8
-
£396 GBP
View
A
Retailer 9
-
£437 GBP
View
A
Retailer 10
-
£486 GBP
View
A
Retailer 11
-
£546 GBP
View
A
Retailer 12
-
£580 GBP
View
B+
Retailer 13
-
£740 GBP
View
Retailer 14
-
£854 GBP
View
Price last confirmed 22 days ago
B+
Retailer 15
-
£874 GBP
View
Most Expensive
B
Brilliant Earth
21419926A · Nov 4
£1,174 GBP
$1,580 USD
View
15 more retailers have this diamond
Prices start from £157 GBPSave up to £1,017 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
0.91ct Cushion
£157 GBP