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Cushion|Lab Grown|IGI

3.05ct E VS1 Cushion Lab Grown Diamond

ID • E/VS1 • IGI LG842630587

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG842630587

Diamond specifications and retailer prices

From £478 GBP
HK$5,000 HKD
As of October 30, 2026
Save £3,194 GBP (87%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £3,672 GBP at Brilliant Earth · As of October 28, 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 E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG842630587 or 842630587. Listed at 16 retailers as of October 28, 2026, with prices from £478 to £3,672, a £3,194 spread on the same certified stone. Brilliant Earth lists it at £3,672. 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
E
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle29.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG842630587
Dimensions9.67 × 7.30 × 4.89 mm
L/W Ratio1.32
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.67 mm7.30 mm3.05 ctE / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG842630587
Side View
Table 59.0%Crown 37.2°Girdle: MED-THKPavilion 29.3°Culet: NoneDepth 67.0%

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 30
Current: £3,672 GBP|Low: £392 GBP|High: £3,859 GBP|Avg: £1,194 GBP|-4.8%
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
Retailer 15
Retailer 16
Retailer 17
October 30, 2026
Retailer 4£400 GBP
Retailer 12£478 GBP
Retailer 13£508 GBP
Retailer 16£534 GBP
Retailer 11£639 GBP
Retailer 7£691 GBP
Retailer 14£732 GBP
Retailer 6£944 GBP
Retailer 17£954 GBP
Retailer 3£971 GBP
Retailer 2£1,380 GBP
Retailer 9£1,447 GBP
Retailer 8£1,556 GBP
Retailer 15£1,631 GBP
Retailer 5£1,659 GBP
Retailer 10£1,893 GBP
Brilliant Earth£3,672 GBP

17 data points across 17 retailers

16 retailers£478 GBP to £3,672 GBP

A
Cheapest Retailer
-
£478 GBP
HK$5,000 HKD
A
Retailer 2
-
£508 GBP
View
A
Retailer 3
-
£534 GBP
$715 USD
View
A
Retailer 4
-
£639 GBP
€816 EUR
View
A
Retailer 5
-
£691 GBP
$926 USD
View
A
Retailer 6
-
£732 GBP
View
Retailer 7
-
£944 GBP
A$1,945 AUD
View
Price last confirmed 10 days ago
A
Retailer 8
-
£954 GBP
ZAR 20,653 ZAR
View
A
Retailer 9
-
£971 GBP
$1,301 USD
View
B+
Retailer 10
-
£1,380 GBP
SGD 2,499 SGD
View
B+
Retailer 11
-
£1,447 GBP
$1,939 USD
View
B+
Retailer 12
-
£1,556 GBP
$2,085 USD
View
B+
Retailer 13
-
£1,631 GBP
View
B+
Retailer 14
-
£1,659 GBP
$2,223 USD
View
B+
Retailer 15
-
£1,893 GBP
$2,537 USD
View
Most Expensive
B
Brilliant Earth
21840443A · Oct 28
£3,672 GBP
$4,920 USD
View
15 more retailers have this diamond
Prices start from £478 GBPSave up to £3,194 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
3.05ct Cushion
£478 GBP