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Cushion|Lab Grown|IGI

1.30ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG831696571

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG831696571

Diamond specifications and retailer prices

From £233 GBP
$310 USD
As of October 25, 2026
Save £1,772 GBP (88%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £2,005 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.3ct lab-grown cushion diamond

This 1.3ct 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 top-tier cut grade and certified by IGI LG831696571 or 831696571. Listed at 16 retailers as of October 25, 2026, with prices from £233 to £2,005, a £1,772 spread on the same certified stone. Brilliant Earth lists it at £2,005. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.30
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831696571
Dimensions7.97 × 5.36 × 3.57 mm
L/W Ratio1.49
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
7.97 mm5.36 mm1.30 ctE / IF
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831696571
Side View
Table 62.0%Crown 33.3°Girdle: MED-THKPavilion 38.7°Culet: NoneDepth 66.6%

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 25
Current: £2,005 GBP|Low: £233 GBP|High: £2,005 GBP|Avg: £760 GBP
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
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Retailer 16
October 30, 2026
Retailer 12£233 GBP
Retailer 16£248 GBP
Retailer 3£258 GBP
Retailer 13£349 GBP
Retailer 6£390 GBP
Retailer 11£400 GBP
Retailer 5£424 GBP
Retailer 2£443 GBP
Retailer 9£504 GBP
Retailer 15£670 GBP
Retailer 4£787 GBP
Retailer 10£938 GBP
Retailer 8£991 GBP
Retailer 14£1,344 GBP
Retailer 7£1,506 GBP
Brilliant Earth£2,005 GBP

18 data points across 16 retailers

16 retailers£233 GBP to £2,005 GBP

A
Cheapest Retailer
-
£233 GBP
$310 USD
Retailer 2
-
£248 GBP
View
Price last confirmed 13 days ago
A
Retailer 3
-
£258 GBP
$343 USD
View
Final sale: no returns
A
Retailer 4
-
£349 GBP
$465 USD
View
A
Retailer 5
-
£390 GBP
$519 USD
View
A
Retailer 6
-
£400 GBP
ZAR 8,607 ZAR
View
A
Retailer 7
-
£424 GBP
$565 USD
View
A
Retailer 8
-
£443 GBP
View
A
Retailer 9
-
£504 GBP
€639 EUR
View
A
Retailer 10
-
£670 GBP
$892 USD
View
A
Retailer 11
-
£787 GBP
$1,049 USD
View
B+
Retailer 12
-
£938 GBP
View
B+
Retailer 13
-
£991 GBP
SGD 1,784 SGD
View
Retailer 14
-
£1,344 GBP
$1,790 USD
View
Price last confirmed 8 days ago
B
Retailer 15
-
£1,506 GBP
$2,006 USD
View
Most Expensive
B
Brilliant Earth
21813627A · Oct 29
£2,005 GBP
$2,670 USD
View
15 more retailers have this diamond
Prices start from £233 GBPSave up to £1,772 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
1.30ct Cushion
£233 GBP