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Cushion|Lab Grown|IGI

1.21ct E IF Cushion Lab Grown Diamond

VG • E/IF • IGI LG817610884

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG817610884

Diamond specifications and retailer prices

From £287 GBP
$385 USD
As of October 31, 2026
Save £969 GBP (77%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,257 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.21ct lab-grown cushion diamond

This 1.21ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG817610884 or 817610884. Listed at 15 retailers as of October 29, 2026, with prices from £287 to £1,257, a £969 spread on the same certified stone. MOH London lists it at £1,257. 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

1.21
Carat
E
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.1°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817610884
Dimensions7.57 × 5.39 × 3.62 mm
L/W Ratio1.40
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.57 mm5.39 mm1.21 ctE / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817610884
Side View
Table 66.0%Crown 40.1°Girdle: MED-STKPavilion 35°Culet: NoneDepth 67.2%

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 31
Current: £1,257 GBP|Low: £287 GBP|High: £1,311 GBP|Avg: £702 GBP|-4.1%
MOH London
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 31, 2026
Retailer 2£287 GBP
Retailer 12£339 GBP
Retailer 10£431 GBP
Retailer 8£433 GBP
Retailer 4£499 GBP
Retailer 6£547 GBP
Retailer 11£558 GBP
Retailer 7£572 GBP
Retailer 14£611 GBP
Retailer 5£777 GBP
Retailer 9£1,016 GBP
Retailer 3£1,060 GBP
Retailer 13£1,160 GBP
MOH London£1,257 GBP

18 data points across 14 retailers

15 retailers£287 GBP to £1,257 GBP

A
Cheapest Retailer
-
£287 GBP
$385 USD
Final sale: no returns
A
Retailer 2
-
£339 GBP
View
A
Retailer 3
-
£431 GBP
$578 USD
View
A
Retailer 4
-
£433 GBP
$580 USD
View
A
Retailer 5
-
£499 GBP
€637 EUR
View
Retailer 6
-
£547 GBP
ZAR 11,841 ZAR
View
Price last confirmed 7 days ago
A
Retailer 7
-
£558 GBP
$747 USD
View
A
Retailer 8
-
£572 GBP
View
A
Retailer 9
-
£611 GBP
$819 USD
View
B+
Retailer 10
-
£777 GBP
A$1,602 AUD
View
Retailer 11
-
£880 GBP
A$1,815 AUD
View
Price last confirmed 23 days ago
B+
Retailer 12
-
£1,016 GBP
SGD 1,839 SGD
View
B+
Retailer 13
-
£1,060 GBP
$1,421 USD
View
B
Retailer 14
-
£1,160 GBP
$1,554 USD
View
Most Expensive
B
MOH London
LG817610884 · Oct 29
£1,257 GBP
View
14 more retailers have this diamond
Prices start from £287 GBPSave up to £969 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
1.21ct Cushion
£287 GBP