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Cushion|Lab Grown|IGI

1.05ct D VVS1 Cushion Lab Grown Diamond

ID • D/VVS1 • IGI LG786634307

Shape and cutting style on the report: Antique cushion cut

Certificate IGI LG786634307

Diamond specifications and retailer prices

From £257 GBP
$345 USD
As of October 29, 2026
Save £1,145 GBP (82%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,403 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 D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG786634307 or 786634307. Listed at 18 retailers as of October 27, 2026, with prices from £257 to £1,403, a £1,145 spread on the same certified stone. Queensmith lists it at £1,403. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.05
Carat
D
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786634307
Dimensions6.61 × 5.78 × 3.44 mm
L/W Ratio1.14
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
6.61 mm5.78 mm1.05 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786634307
Side View
Table 58.0%Crown 35.4°Girdle: MED-STKPavilion 41.5°Culet: LargeDepth 59.5%

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 29
Current: £574 GBP|Low: £247 GBP|High: £1,263 GBP|Avg: £642 GBP|+3.1%
Retailer 1
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 12£257 GBP
Retailer 11£288 GBP
Retailer 5£299 GBP
Retailer 3£319 GBP
Retailer 14£319 GBP
Retailer 13£429 GBP
Retailer 9£433 GBP
Retailer 1£574 GBP
Retailer 7£775 GBP
Retailer 4£850 GBP
Retailer 10£937 GBP
Retailer 2£1,026 GBP
Retailer 6£1,240 GBP
Retailer 8£1,254 GBP

44 data points across 14 retailers

18 retailers£257 GBP to £1,403 GBP

A
Cheapest Retailer
-
£257 GBP
$345 USD
A
Retailer 2
-
£288 GBP
$386 USD
View
Final sale: no returns
A
Retailer 3
-
£299 GBP
$400 USD
View
A
Retailer 4
-
£319 GBP
$428 USD
View
A
Retailer 5
-
£319 GBP
$428 USD
View
B+
Retailer 6
-
£379 GBP
$508 USD
View
B+
Retailer 7
-
£429 GBP
$575 USD
View
B+
Retailer 8
-
£433 GBP
$580 USD
View
B+
Retailer 9
-
£574 GBP
View
B
Retailer 10
-
£775 GBP
A$1,598 AUD
View
B
Retailer 11
-
£850 GBP
SGD 1,539 SGD
View
B
Retailer 12
-
£937 GBP
$1,255 USD
View
B
Retailer 13
-
£1,026 GBP
$1,375 USD
View
B
Retailer 14
-
£1,058 GBP
$1,418 USD
View
B
Retailer 15
-
£1,236 GBP
$1,656 USD
View
B
Retailer 16
-
£1,240 GBP
View
B
Retailer 17
-
£1,254 GBP
View
Most Expensive
B
Queensmith
LG786634307 · Oct 27
£1,403 GBP
View
17 more retailers have this diamond
Prices start from £257 GBPSave up to £1,145 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
£257 GBP