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Cushion|Lab Grown|IGI

3.06ct E SI2 Cushion Lab Grown Diamond

ID • E/SI2 • IGI LG743506423

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG743506423

Diamond specifications and retailer prices

From £306 GBP
HK$3,200 HKD
As of October 30, 2026
Save £1,153 GBP (79%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,459 GBP at Rare Carat · As of October 28, 2026
View at Rare Carat

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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG743506423 or 743506423. Listed at 12 retailers as of October 28, 2026, with prices from £306 to £1,459, a £1,153 spread on the same certified stone. Rare Carat lists it at £1,459. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.06
Carat
E
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle34.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG743506423
Dimensions9.73 × 7.27 × 4.88 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.73 mm7.27 mm3.06 ctE / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG743506423
Side View
Table 63.0%Crown 34.7°Girdle: MED-STKPavilion 34.5°Culet: NoneDepth 67.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £1,459 GBP|Low: £251 GBP|High: £2,702 GBP|Avg: £776 GBP|-1.5%
Rare Carat
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
October 30, 2026
Retailer 6£251 GBP
Retailer 5£306 GBP
Retailer 9£373 GBP
Retailer 7£433 GBP
Retailer 13£454 GBP
Retailer 10£491 GBP
Retailer 4£518 GBP
Retailer 3£692 GBP
Retailer 12£719 GBP
Retailer 14£804 GBP
Retailer 8£876 GBP
Retailer 11£1,117 GBP
Retailer 2£1,433 GBP
Rare Carat£1,459 GBP

43 data points across 14 retailers

12 retailers£306 GBP to £1,459 GBP

A
Cheapest Retailer
-
£306 GBP
HK$3,200 HKD
A
Retailer 2
-
£373 GBP
View
A
Retailer 3
-
£433 GBP
€552 EUR
View
B+
Retailer 4
-
£454 GBP
$608 USD
View
A
Retailer 5
-
£491 GBP
View
A
Retailer 6
-
£518 GBP
$694 USD
View
A
Retailer 7
-
£692 GBP
$927 USD
View
B+
Retailer 8
-
£719 GBP
$964 USD
View
B+
Retailer 9
-
£876 GBP
SGD 1,587 SGD
View
B+
Retailer 10
-
£1,117 GBP
View
B
Retailer 11
-
£1,433 GBP
$1,920 USD
View
Most Expensive
B+
Rare Carat
127754-C · Oct 28
£1,459 GBP
$1,955 USD
View
11 more retailers have this diamond
Prices start from £306 GBPSave up to £1,153 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
£306 GBP