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Cushion|Lab Grown|IGI

1.27ct E IF Cushion Lab Grown Diamond

GD • E/IF • IGI LG617497087

Shape and cutting style on the report: Cushion antique brilliant

Certificate IGI LG617497087

Diamond specifications and retailer prices

From £319 GBP
$428 USD
As of October 27, 2026
1 retailer carries this diamond
Only listing: £319 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 1.27ct lab-grown cushion diamond

This 1.27ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a standard cut grade and certified by IGI LG617497087 or 617497087. Listed at a single retailer as of October 27, 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

1.27
Carat
E
Colour
IF
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44°
Pavilion angle42.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG617497087
Dimensions6.31 × 6.30 × 4.48 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeMedium
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
6.31 mm6.30 mm1.27 ctE / IF
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG617497087
Side View
Table 52.0%Crown 44°Girdle: THN-STKPavilion 42.8°Culet: MediumDepth 71.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 27
Current: £466 GBP|Low: £175 GBP|High: £1,305 GBP|Avg: £717 GBP|-26.7%
Retailer 1
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Retailer 4
Retailer 5
Retailer 6
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Retailer 10
William & Sons Jewelers
September 27, 2026
William & Sons Jewelers£319 GBP
Retailer 3£366 GBP
Retailer 10£390 GBP
Retailer 4£433 GBP
Retailer 1£466 GBP
Retailer 7£467 GBP
Retailer 8£622 GBP
Retailer 2£650 GBP
Retailer 9£914 GBP
Retailer 5£990 GBP
Retailer 6£1,118 GBP

73 data points across 11 retailers

1 retailer

B+
William & Sons Jewelers
cert_LG617497087 · Oct 27
£319 GBP
$428 USD
View
Final sale: no returns

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.

B+
1.27ct Cushion
£319 GBP