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Cushion|Lab Grown|IGI

1.00ct G VVS2 Cushion Lab Grown Diamond

GD • G/VVS2 • IGI LG688518345

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG688518345

Diamond specifications and retailer prices

From £260 GBP
As of November 5, 2026
Save £1,045 GBP (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,305 GBP at Taylor and Hart · As of November 4, 2026
View at Taylor and Hart

About this 1ct lab-grown cushion diamond

This 1ct lab-grown cushion sits in the classic one-carat band, graded G colour (near-colourless) and VVS2 clarity (very-very-slightly-included), with a standard cut grade and certified by IGI LG688518345 or 688518345. Listed at 11 retailers as of November 4, 2026, with prices from £260 to £1,305, a £1,045 spread on the same certified stone. Taylor and Hart lists it at £1,305. 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

1.00
Carat
G
Colour
VVS2
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG688518345
Dimensions7.54 × 4.83 × 3.05 mm
L/W Ratio1.56
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.54 mm4.83 mm1.00 ctG / VVS2
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG688518345
Side View
Table 60.0%Crown 36.6°Girdle: MED-STKPavilion 41°Culet: LargeDepth 63.1%

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: Nov 5
Current: £507 GBP|Low: £186 GBP|High: £1,305 GBP|Avg: £637 GBP|+2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Taylor and Hart
November 5, 2026
Retailer 9£260 GBP
Retailer 2£283 GBP
Retailer 7£378 GBP
Retailer 11£404 GBP
Retailer 8£469 GBP
Retailer 6£496 GBP
Retailer 1£507 GBP
Retailer 5£707 GBP
Retailer 3£838 GBP
Retailer 10£872 GBP
Retailer 4£1,150 GBP
Taylor and Hart£1,305 GBP

43 data points across 12 retailers

11 retailers£260 GBP to £1,305 GBP

A
Cheapest Retailer
-
£260 GBP
Final sale: no returns
B+
Retailer 2
-
£283 GBP
View
B+
Retailer 3
-
£378 GBP
View
B
Retailer 4
-
£404 GBP
View
B
Retailer 5
-
£469 GBP
View
B
Retailer 6
-
£496 GBP
View
B
Retailer 7
-
£507 GBP
View
B
Retailer 8
-
£707 GBP
View
C
Retailer 9
-
£872 GBP
View
B
Retailer 10
-
£1,150 GBP
View
Most Expensive
C
Taylor and Hart
SXJCGL1 · Nov 4
£1,305 GBP
$1,762 USD
View
10 more retailers have this diamond
Prices start from £260 GBPSave up to £1,045 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
1.00ct Cushion
£260 GBP