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Cushion|Lab Grown|IGI

0.91ct E IF Cushion Lab Grown Diamond

VG • E/IF • IGI LG830623927

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG830623927

Diamond specifications and retailer prices

From £237 GBP
$317 USD
As of October 30, 2026
Save £887 GBP (79%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,124 GBP at Helzberg Diamonds · As of October 30, 2026
View at Helzberg Diamonds

About this 0.91ct lab-grown cushion diamond

This 0.91ct lab-grown cushion sits in the just-under-one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG830623927 or 830623927. Listed at 15 retailers as of October 30, 2026, with prices from £237 to £1,124, a £887 spread on the same certified stone. Helzberg Diamonds lists it at £1,124. 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

0.91
Carat
E
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.2°
Pavilion angle36.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830623927
Dimensions7.54 × 4.87 × 3.26 mm
L/W Ratio1.55
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
7.54 mm4.87 mm0.91 ctE / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830623927
Side View
Table 58.0%Crown 31.2°Girdle: THN-THKPavilion 36.6°Culet: NoneDepth 66.9%

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 30
Current: £1,124 GBP|Low: £237 GBP|High: £1,136 GBP|Avg: £599 GBP
Helzberg Diamonds
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
October 31, 2026
Retailer 3£237 GBP
Retailer 9£266 GBP
Retailer 4£366 GBP
Retailer 14£387 GBP
Retailer 11£392 GBP
Retailer 2£409 GBP
Retailer 15£429 GBP
Retailer 10£469 GBP
Retailer 12£540 GBP
Retailer 8£572 GBP
Retailer 5£735 GBP
Retailer 7£767 GBP
Retailer 6£772 GBP
Retailer 13£869 GBP
Helzberg Diamonds£1,124 GBP

27 data points across 15 retailers

15 retailers£237 GBP to £1,124 GBP

A
Cheapest Retailer
-
£237 GBP
$317 USD
Final sale: no returns
A
Retailer 2
-
£266 GBP
View
A
Retailer 3
-
£366 GBP
$491 USD
View
A
Retailer 4
-
£387 GBP
$518 USD
View
A
Retailer 5
-
£392 GBP
ZAR 8,480 ZAR
View
A
Retailer 6
-
£409 GBP
View
A
Retailer 7
-
£429 GBP
$575 USD
View
A
Retailer 8
-
£469 GBP
€599 EUR
View
A
Retailer 9
-
£540 GBP
A$1,113 AUD
View
A
Retailer 10
-
£572 GBP
$766 USD
View
B+
Retailer 11
-
£735 GBP
$985 USD
View
B+
Retailer 12
-
£767 GBP
SGD 1,388 SGD
View
Retailer 13
-
£772 GBP
$1,035 USD
View
Price last confirmed 10 days ago
B+
Retailer 14
-
£869 GBP
View
Most Expensive
B
Helzberg Diamonds
ZXZOJGMIJPIN · Oct 30
£1,124 GBP
$1,506 USD
View
14 more retailers have this diamond
Prices start from £237 GBPSave up to £887 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
0.91ct Cushion
£237 GBP