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Cushion|Lab Grown|IGI

3.05ct E VS1 Cushion Lab Grown Diamond

ID • E/VS1 • IGI LG833671830

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG833671830

Diamond specifications and retailer prices

From £468 GBP
HK$4,900 HKD
As of October 30, 2026
Save £2,637 GBP (85%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £3,105 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 LG833671830 or 833671830. Listed at 17 retailers as of October 28, 2026, with prices from £468 to £3,105, a £2,637 spread on the same certified stone. Brilliant Earth lists it at £3,105. 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 angle35.1°
Pavilion angle32°
OriginLab Grown
Grading LabIGI
CertificateIGI LG833671830
Dimensions8.51 × 8.04 × 5.09 mm
L/W Ratio1.06
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.51 mm8.04 mm3.05 ctE / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG833671830
Side View
Table 63.0%Crown 35.1°Girdle: MED-STKPavilion 32°Culet: NoneDepth 63.3%

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: £3,105 GBP|Low: £373 GBP|High: £3,291 GBP|Avg: £1,194 GBP|+10.6%
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
Retailer 18
October 30, 2026
Retailer 9£389 GBP
Retailer 16£468 GBP
Retailer 18£494 GBP
Retailer 12£537 GBP
Retailer 11£647 GBP
Retailer 4£673 GBP
Retailer 13£710 GBP
Retailer 17£916 GBP
Retailer 15£927 GBP
Retailer 7£966 GBP
Retailer 3£999 GBP
Retailer 8£1,407 GBP
Retailer 5£1,523 GBP
Retailer 14£1,584 GBP
Retailer 6£1,611 GBP
Retailer 10£1,670 GBP
Retailer 2£1,834 GBP
Brilliant Earth£3,105 GBP

36 data points across 18 retailers

17 retailers£468 GBP to £3,105 GBP

A
Cheapest Retailer
-
£468 GBP
HK$4,900 HKD
Retailer 2
-
£494 GBP
View
Price last confirmed 13 days ago
A
Retailer 3
-
£537 GBP
$720 USD
View
A
Retailer 4
-
£647 GBP
€825 EUR
View
B+
Retailer 5
-
£673 GBP
$902 USD
View
A
Retailer 6
-
£710 GBP
View
Retailer 7
-
£916 GBP
A$1,889 AUD
View
Price last confirmed 10 days ago
A
Retailer 8
-
£927 GBP
ZAR 20,058 ZAR
View
A
Retailer 9
-
£966 GBP
$1,295 USD
View
A
Retailer 10
-
£999 GBP
$1,339 USD
View
B+
Retailer 11
-
£1,407 GBP
$1,885 USD
View
B+
Retailer 12
-
£1,523 GBP
$2,040 USD
View
B+
Retailer 13
-
£1,584 GBP
View
B+
Retailer 14
-
£1,611 GBP
$2,159 USD
View
Retailer 15
-
£1,670 GBP
A$3,443 AUD
View
Price last confirmed 22 days ago
B+
Retailer 16
-
£1,834 GBP
$2,458 USD
View
Most Expensive
B
Brilliant Earth
21423458A · Oct 28
£3,105 GBP
$4,160 USD
View
16 more retailers have this diamond
Prices start from £468 GBPSave up to £2,637 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
£468 GBP