CaratHunter
Plans
Cushion|Lab Grown|IGI

1.05ct E VVS1 Cushion Lab Grown Diamond

ID • E/VVS1 • IGI LG818644817

Shape and cutting style on the report: Cushion mixed cut

Certificate IGI LG818644817

Diamond specifications and retailer prices

From £290 GBP
$388 USD
As of October 25, 2026
Save £1,075 GBP (79%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,365 GBP at Queensmith · As of October 27, 2026
View at Queensmith

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 VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG818644817 or 818644817. Listed at 18 retailers as of October 25, 2026, with prices from £290 to £1,365, a £1,075 spread on the same certified stone. Queensmith lists it at £1,365. 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
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.3°
Pavilion angle32.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818644817
Dimensions7.80 × 5.11 × 2.80 mm
L/W Ratio1.53
Girdle conditionFaceted
Culet sizeLarge
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
7.80 mm5.11 mm1.05 ctE / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818644817
Side View
Table 55.0%Crown 31.3°Girdle: MED-STKPavilion 32.7°Culet: LargeDepth 54.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 25
Current: £1,365 GBP|Low: £290 GBP|High: £1,365 GBP|Avg: £724 GBP
Queensmith
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
Retailer 17
Retailer 18
October 30, 2026
Retailer 4£290 GBP
Retailer 15£325 GBP
Retailer 8£357 GBP
Retailer 18£358 GBP
Retailer 3£390 GBP
Retailer 11£468 GBP
Retailer 6£469 GBP
Retailer 14£498 GBP
Retailer 2£517 GBP
Retailer 12£707 GBP
Retailer 17£713 GBP
Retailer 5£774 GBP
Retailer 10£966 GBP
Retailer 7£1,020 GBP
Retailer 13£1,090 GBP
Retailer 9£1,161 GBP
Retailer 16£1,169 GBP
Queensmith£1,365 GBP

41 data points across 18 retailers

18 retailers£290 GBP to £1,365 GBP

A
Cheapest Retailer
-
£290 GBP
$388 USD
A
Retailer 2
-
£325 GBP
HK$3,400 HKD
View
B+
Retailer 3
-
£357 GBP
$478 USD
View
A
Retailer 4
-
£358 GBP
$480 USD
View
B+
Retailer 5
-
£390 GBP
$522 USD
View
B+
Retailer 6
-
£468 GBP
€597 EUR
View
B+
Retailer 7
-
£469 GBP
$628 USD
View
B+
Retailer 8
-
£498 GBP
ZAR 10,784 ZAR
View
B+
Retailer 9
-
£517 GBP
View
B
Retailer 10
-
£707 GBP
A$1,458 AUD
View
B
Retailer 11
-
£713 GBP
$955 USD
View
B
Retailer 12
-
£774 GBP
SGD 1,401 SGD
View
B
Retailer 13
-
£966 GBP
$1,295 USD
View
B
Retailer 14
-
£1,041 GBP
$1,395 USD
View
B
Retailer 15
-
£1,090 GBP
$1,460 USD
View
B
Retailer 16
-
£1,161 GBP
$1,555 USD
View
Retailer 17
-
£1,169 GBP
View
Price last confirmed 9 days ago
Most Expensive
B
Queensmith
LG818644817 · Oct 27
£1,365 GBP
View
17 more retailers have this diamond
Prices start from £290 GBPSave up to £1,075 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
£290 GBP