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Cushion|Lab Grown|IGI

3.05ct E VS1 Cushion Lab Grown Diamond

EX • E/VS1 • IGI LG799647275

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG799647275

Diamond specifications and retailer prices

From £422 GBP
$566 USD
As of October 29, 2026
Save £2,921 GBP (87%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £4,485 GBP at Brilliant Earth · As of October 22, 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 LG799647275 or 799647275. Listed at 19 retailers as of October 29, 2026, with a 692% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799647275
Dimensions10.02 × 7.61 × 5.08 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
10.02 mm7.61 mm3.05 ctE / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799647275
Side View
Table 63.0%Crown 33.4°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 66.8%

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 29
Current: £4,485 GBP|Low: £422 GBP|High: £4,485 GBP|Avg: £1,391 GBP
Brilliant Earth
Retailer 2
Retailer 3
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Retailer 19
October 30, 2026
Retailer 8£422 GBP
Retailer 11£483 GBP
Retailer 17£541 GBP
Retailer 2£590 GBP
Retailer 3£726 GBP
Retailer 19£735 GBP
Retailer 18£758 GBP
Retailer 14£777 GBP
Retailer 13£805 GBP
Retailer 12£1,090 GBP
Retailer 16£1,120 GBP
Retailer 7£1,501 GBP
Retailer 4£1,733 GBP
Retailer 9£1,760 GBP
Retailer 6£1,784 GBP
Retailer 10£1,948 GBP
Retailer 15£2,252 GBP
Retailer 5£3,344 GBP
Brilliant Earth£4,485 GBP

42 data points across 19 retailers

19 retailers£422 GBP to £3,344 GBP

A
Cheapest Retailer
-
£422 GBP
$566 USD
Final sale: no returns
Retailer 2
-
£483 GBP
$647 USD
View
Price last confirmed 14 days ago
A
Retailer 3
-
£541 GBP
$725 USD
View
A
Retailer 4
-
£590 GBP
View
A
Retailer 5
-
£726 GBP
$973 USD
View
A
Retailer 6
-
£735 GBP
$985 USD
View
A
Retailer 7
-
£758 GBP
$1,016 USD
View
A
Retailer 8
-
£777 GBP
€991 EUR
View
A
Retailer 9
-
£805 GBP
View
A
Retailer 10
-
£1,090 GBP
A$2,246 AUD
View
A
Retailer 11
-
£1,120 GBP
ZAR 24,254 ZAR
View
B+
Retailer 12
-
£1,501 GBP
View
B+
Retailer 13
-
£1,733 GBP
$2,322 USD
View
B+
Retailer 14
-
£1,760 GBP
$2,358 USD
View
B+
Retailer 15
-
£1,784 GBP
SGD 3,230 SGD
View
Retailer 16
-
£1,948 GBP
$2,610 USD
View
Price last confirmed 9 days ago
B
Retailer 17
-
£2,252 GBP
View
B
Retailer 18
-
£3,344 GBP
$4,480 USD
View
Most Expensive
Brilliant Earth
21068342Y · Oct 22
£4,485 GBP
$6,010 USD
View
Price last confirmed 8 days ago
18 more retailers have this diamond
Prices start from £422 GBPSave up to £2,921 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
£422 GBP