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Cushion|Lab Grown|IGI

3.06ct E IF Cushion Lab Grown Diamond

EX • E/IF • IGI LG812621046

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

Certificate IGI LG812621046

Diamond specifications and retailer prices

From £1,079 GBP
$1,446 USD
As of October 31, 2026
Save £4,302 GBP (80%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £5,381 GBP at Brilliant Earth · As of October 31, 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 E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG812621046 or 812621046. Listed at 18 retailers as of October 31, 2026, with prices from £1,079 to £5,381, a £4,302 spread on the same certified stone. Brilliant Earth lists it at £5,381. 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
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG812621046
Dimensions8.66 × 8.55 × 5.49 mm
L/W Ratio1.01
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
8.66 mm8.55 mm3.06 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG812621046
Side View
Table 64.0%Crown 33.9°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 64.2%

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: Oct 31
Current: £5,381 GBP|Low: £1,079 GBP|High: £5,545 GBP|Avg: £2,733 GBP|-3.0%
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
Retailer 17
Retailer 18
November 1, 2026
Retailer 6£1,079 GBP
Retailer 10£1,163 GBP
Retailer 14£1,246 GBP
Retailer 13£1,577 GBP
Retailer 8£1,683 GBP
Retailer 12£1,783 GBP
Retailer 15£1,935 GBP
Retailer 3£2,311 GBP
Retailer 2£2,526 GBP
Retailer 16£2,598 GBP
Retailer 4£2,707 GBP
Retailer 7£2,896 GBP
Retailer 5£3,075 GBP
Retailer 18£3,492 GBP
Retailer 17£3,614 GBP
Retailer 11£3,928 GBP
Retailer 9£4,213 GBP
Brilliant Earth£5,381 GBP

35 data points across 18 retailers

18 retailers£1,079 GBP to £5,381 GBP

A
Cheapest Retailer
-
£1,079 GBP
$1,446 USD
Final sale: no returns
Retailer 2
-
£1,163 GBP
$1,558 USD
View
Price last confirmed 19 days ago
A
Retailer 3
-
£1,246 GBP
$1,670 USD
View
A
Retailer 4
-
£1,577 GBP
View
A
Retailer 5
-
£1,683 GBP
$2,255 USD
View
A
Retailer 6
-
£1,783 GBP
€2,275 EUR
View
A
Retailer 7
-
£1,935 GBP
$2,593 USD
View
A
Retailer 8
-
£2,311 GBP
$3,096 USD
View
A
Retailer 9
-
£2,526 GBP
A$5,208 AUD
View
A
Retailer 10
-
£2,598 GBP
ZAR 56,234 ZAR
View
A
Retailer 11
-
£2,707 GBP
View
A
Retailer 12
-
£2,896 GBP
$3,880 USD
View
A
Retailer 13
-
£3,075 GBP
$4,120 USD
View
B+
Retailer 14
-
£3,492 GBP
$4,679 USD
View
B+
Retailer 15
-
£3,614 GBP
View
B+
Retailer 16
-
£3,928 GBP
$5,263 USD
View
Retailer 17
-
£4,213 GBP
$5,645 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
20895946A · Oct 31
£5,381 GBP
$7,210 USD
View
17 more retailers have this diamond
Prices start from £1,079 GBPSave up to £4,302 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
£1,079 GBP