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Cushion|Lab Grown|IGI

1.05ct E VS1 Cushion Lab Grown Diamond

ID • E/VS1 • IGI LG831608926

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG831608926

Diamond specifications and retailer prices

From £137 GBP
$182 USD
As of October 27, 2026
Save £676 GBP (83%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £813 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.05ct lab-grown cushion diamond

This 1.05ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG831608926 or 831608926. Listed at 16 retailers as of October 27, 2026, with prices from £137 to £813, a £676 spread on the same certified stone. Brilliant Earth lists it at £813. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.05
Carat
E
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35.7°
Pavilion angle32.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831608926
Dimensions6.85 × 5.16 × 3.39 mm
L/W Ratio1.33
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.85 mm5.16 mm1.05 ctE / VS1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG831608926
Side View
Table 67.0%Crown 35.7°Girdle: MED-STKPavilion 32.4°Culet: NoneDepth 65.7%

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 27
Current: £813 GBP|Low: £137 GBP|High: £843 GBP|Avg: £397 GBP|-3.6%
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
Retailer 14
Retailer 15
Retailer 16
October 29, 2026
Retailer 6£137 GBP
Retailer 8£173 GBP
Retailer 3£193 GBP
Retailer 5£254 GBP
Retailer 13£254 GBP
Retailer 14£257 GBP
Retailer 10£267 GBP
Retailer 16£274 GBP
Retailer 11£326 GBP
Retailer 15£395 GBP
Retailer 9£412 GBP
Retailer 2£490 GBP
Retailer 7£530 GBP
Retailer 12£711 GBP
Retailer 4£809 GBP
Brilliant Earth£813 GBP

42 data points across 16 retailers

16 retailers£137 GBP to £813 GBP

A
Cheapest Retailer
-
£137 GBP
$182 USD
Final sale: no returns
A
Retailer 2
-
£173 GBP
HK$1,800 HKD
View
A
Retailer 3
-
£193 GBP
View
Price last confirmed 14 days ago
A
Retailer 4
-
£254 GBP
$337 USD
View
A
Retailer 5
-
£254 GBP
€322 EUR
View
A
Retailer 6
-
£257 GBP
ZAR 5,513 ZAR
View
A
Retailer 7
-
£267 GBP
View
A
Retailer 8
-
£274 GBP
$364 USD
View
B+
Retailer 9
-
£326 GBP
View
B+
Retailer 10
-
£395 GBP
$525 USD
View
B+
Retailer 11
-
£412 GBP
SGD 740 SGD
View
B+
Retailer 12
-
£490 GBP
$651 USD
View
B
Retailer 13
-
£530 GBP
$704 USD
View
B
Retailer 14
-
£711 GBP
View
B
Retailer 15
-
£809 GBP
$1,075 USD
View
Most Expensive
B
Brilliant Earth
21285574A · Oct 28
£813 GBP
$1,080 USD
View
15 more retailers have this diamond
Prices start from £137 GBPSave up to £676 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
1.05ct Cushion
£137 GBP