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Cushion|Lab Grown|IGI

3.05ct F VVS1 Cushion Lab Grown Diamond

ID • F/VVS1 • IGI LG812643952

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG812643952

Diamond specifications and retailer prices

From £1,426 GBP
As of November 1, 2026
Save £2,722 GBP (66%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £4,148 GBP at Brilliant Earth · As of November 3, 2026
View at Brilliant Earth

About this 3.05ct lab-grown cushion diamond

This 3.05ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG812643952 or 812643952. Listed at 5 retailers as of November 1, 2026, with prices from £1,426 to £4,148, a £2,722 spread on the same certified stone. Brilliant Earth lists it at £4,148. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.05
Carat
F
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.1°
Pavilion angle38.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG812643952
Dimensions10.48 × 7.18 × 4.48 mm
L/W Ratio1.46
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.48 mm7.18 mm3.05 ctF / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG812643952
Side View
Table 52.0%Crown 38.1°Girdle: THK-VTKPavilion 38.1°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £4,148 GBP|Low: £673 GBP|High: £5,296 GBP|Avg: £2,361 GBP|-21.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 31, 2026
Retailer 7£673 GBP
Retailer 6£981 GBP
Retailer 3£1,426 GBP
Retailer 2£1,588 GBP
Retailer 5£3,046 GBP
Retailer 4£3,339 GBP
Brilliant Earth£4,148 GBP

31 data points across 7 retailers

5 retailers£1,426 GBP to £4,148 GBP

B+
Cheapest Retailer
-
£1,426 GBP
B+
Retailer 2
-
£1,588 GBP
View
B
Retailer 3
-
£3,046 GBP
View
B
Retailer 4
-
£3,339 GBP
View
Most Expensive
B
Brilliant Earth
20933589A · Nov 3
£4,148 GBP
$5,600 USD
View
4 more retailers have this diamond
Prices start from £1,426 GBPSave up to £2,722 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.

B+
3.05ct Cushion
£1,426 GBP