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Cushion|Lab Grown|IGI

3.05ct E IF Cushion Lab Grown Diamond

GD • E/IF • IGI LG691552430

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

Certificate IGI LG691552430

Diamond specifications and retailer prices

From £1,755 GBP
$2,352 USD
As of October 30, 2026
1 retailer carries this diamond
Only listing: £1,755 GBP at William & Sons Jewelers
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at William & Sons Jewelers

About this 3.05ct lab-grown cushion diamond

This 3.05ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a standard cut grade and certified by IGI LG691552430 or 691552430. Listed at a single retailer as of October 30, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

3.05
Carat
E
Colour
IF
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG691552430
Dimensions8.50 × 8.37 × 5.69 mm
L/W Ratio1.02
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
8.50 mm8.37 mm3.05 ctE / IF
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG691552430
Side View
Table 61.0%Crown 37.8°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 68.0%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 30
Current: £2,129 GBP|Low: £996 GBP|High: £8,217 GBP|Avg: £3,626 GBP|-30.9%
Retailer 1
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William & Sons Jewelers
September 27, 2026
Retailer 7£1,373 GBP
William & Sons Jewelers£1,755 GBP
Retailer 9£1,936 GBP
Retailer 10£1,952 GBP
Retailer 1£2,129 GBP
Retailer 14£2,211 GBP
Retailer 4£2,597 GBP
Retailer 13£3,321 GBP
Retailer 11£3,749 GBP
Retailer 8£3,825 GBP
Retailer 2£3,926 GBP
Retailer 5£4,193 GBP
Retailer 12£4,837 GBP
Retailer 6£4,883 GBP
Retailer 3£6,590 GBP

71 data points across 15 retailers

1 retailer

B+
William & Sons Jewelers
cert_LG691552430 · Oct 30
£1,755 GBP
$2,352 USD
View
Final sale: no returns

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B+
3.05ct Cushion
£1,755 GBP