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Cushion|Lab Grown|IGI

3.08ct G VS1 Cushion Lab Grown Diamond

ID • G/VS1 • IGI LG526268742

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG526268742

Diamond specifications and retailer prices

From £478 GBP
$640 USD
As of October 31, 2026
Save £3,127 GBP (87%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £3,605 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 3.08ct lab-grown cushion diamond

This 3.08ct lab-grown cushion sits in the three to five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG526268742 or 526268742. Listed at 15 retailers as of October 29, 2026, with prices from £478 to £3,605, a £3,127 spread on the same certified stone. Brilliant Earth lists it at £3,605. 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

3.08
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle34.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG526268742
Dimensions8.18 × 7.76 × 5.37 mm
L/W Ratio1.05
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.18 mm7.76 mm3.08 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG526268742
Side View
Table 63.5%Crown 35.3°Girdle: STK-VTKPavilion 34.7°Culet: NoneDepth 69.2%

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 31
Current: £3,605 GBP|Low: £452 GBP|High: £3,709 GBP|Avg: £1,254 GBP
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
October 31, 2026
Retailer 4£478 GBP
Retailer 12£529 GBP
Retailer 10£612 GBP
Retailer 3£735 GBP
Retailer 11£816 GBP
Retailer 2£827 GBP
Retailer 13£837 GBP
Retailer 7£1,118 GBP
Retailer 9£1,150 GBP
Retailer 14£1,535 GBP
Retailer 6£1,715 GBP
Retailer 5£1,777 GBP
Retailer 8£2,310 GBP
Brilliant Earth£3,605 GBP

42 data points across 14 retailers

15 retailers£478 GBP to £3,605 GBP

A
Cheapest Retailer
-
£478 GBP
$640 USD
Final sale: no returns
Retailer 2
-
£529 GBP
$709 USD
View
Price last confirmed 15 days ago
A
Retailer 3
-
£612 GBP
$820 USD
View
A
Retailer 4
-
£735 GBP
$985 USD
View
A
Retailer 5
-
£816 GBP
$1,093 USD
View
A
Retailer 6
-
£827 GBP
View
A
Retailer 7
-
£837 GBP
$1,121 USD
View
A
Retailer 8
-
£1,118 GBP
A$2,304 AUD
View
A
Retailer 9
-
£1,150 GBP
ZAR 24,884 ZAR
View
B+
Retailer 10
-
£1,535 GBP
View
B+
Retailer 11
-
£1,715 GBP
$2,298 USD
View
B+
Retailer 12
-
£1,777 GBP
$2,380 USD
View
B
Retailer 13
-
£1,968 GBP
HK$20,600 HKD
View
B
Retailer 14
-
£2,310 GBP
View
Most Expensive
B
Brilliant Earth
17972562A · Oct 29
£3,605 GBP
$4,830 USD
View
14 more retailers have this diamond
Prices start from £478 GBPSave up to £3,127 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
3.08ct Cushion
£478 GBP