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Cushion|Lab Grown|IGI

3.06ct F IF Cushion Lab Grown Diamond

EX • F/IF • IGI LG719557147

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

Certificate IGI LG719557147

Diamond specifications and retailer prices

From £1,033 GBP
As of November 5, 2026
Save £3,270 GBP (76%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £4,304 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 3.06ct lab-grown cushion diamond

This 3.06ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG719557147 or 719557147. Listed at 18 retailers as of November 4, 2026, with prices from £1,033 to £4,304, a £3,270 spread on the same certified stone. Brilliant Earth lists it at £4,304. 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

3.06
Carat
F
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.9°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG719557147
Dimensions8.41 × 8.41 × 5.59 mm
L/W Ratio1.00
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
8.41 mm8.41 mm3.06 ctF / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG719557147
Side View
Table 63.0%Crown 37.9°Girdle: MED-STKPavilion 39.8°Culet: NoneDepth 66.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: £4,304 GBP|Low: £894 GBP|High: £4,304 GBP|Avg: £2,169 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
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Retailer 17
Retailer 18
November 5, 2026
Retailer 5£927 GBP
Retailer 18£1,033 GBP
Retailer 7£1,174 GBP
Retailer 11£1,257 GBP
Retailer 3£1,394 GBP
Retailer 14£1,476 GBP
Retailer 17£1,751 GBP
Retailer 12£1,846 GBP
Retailer 16£2,093 GBP
Retailer 15£2,154 GBP
Retailer 4£2,265 GBP
Retailer 9£2,388 GBP
Retailer 8£2,562 GBP
Retailer 6£2,741 GBP
Retailer 2£2,786 GBP
Retailer 13£2,867 GBP
Retailer 10£2,961 GBP
Brilliant Earth£4,304 GBP

37 data points across 18 retailers

18 retailers£1,033 GBP to £4,304 GBP

Retailer 1
-
£927 GBP
Price last confirmed 24 days ago
A
Retailer 2
-
£1,033 GBP
View
A
Retailer 3
-
£1,174 GBP
View
A
Retailer 4
-
£1,257 GBP
View
A
Retailer 5
-
£1,394 GBP
View
A
Retailer 6
-
£1,476 GBP
View
A
Retailer 7
-
£1,751 GBP
View
A
Retailer 8
-
£1,846 GBP
View
Final sale: no returns
A
Retailer 9
-
£2,093 GBP
View
A
Retailer 10
-
£2,154 GBP
View
A
Retailer 11
-
£2,265 GBP
View
B+
Retailer 12
-
£2,388 GBP
View
Retailer 13
-
£2,562 GBP
View
Price last confirmed 25 days ago
B+
Retailer 14
-
£2,741 GBP
View
B+
Retailer 15
-
£2,786 GBP
View
B+
Retailer 16
-
£2,867 GBP
View
B+
Retailer 17
-
£2,961 GBP
View
Most Expensive
B
Brilliant Earth
14943447A · Nov 4
£4,304 GBP
$5,810 USD
View
17 more retailers have this diamond
Prices start from £1,033 GBPSave up to £3,270 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
3.06ct Cushion
£1,033 GBP