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Cushion|Lab Grown|IGI

4.05ct H VS1 Cushion Lab Grown Diamond

GD • H/VS1 • IGI LG547239407

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG547239407

Diamond specifications and retailer prices

From £621 GBP
$832 USD
As of October 31, 2026
Save £1,956 GBP (76%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £2,577 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 4.05ct lab-grown cushion diamond

This 4.05ct lab-grown cushion sits in the three to five carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a standard cut grade and certified by IGI LG547239407 or 547239407. Listed at 12 retailers as of October 31, 2026, with prices from £621 to £2,577, a £1,956 spread on the same certified stone. Taylor and Hart lists it at £2,577. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

4.05
Carat
H
Colour
VS1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle31.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG547239407
Dimensions9.33 × 9.09 × 5.48 mm
L/W Ratio1.03
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
9.33 mm9.09 mm4.05 ctH / VS1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG547239407
Side View
Table 60.5%Crown 34°Girdle: MED-THKPavilion 31.1°Culet: NoneDepth 60.3%

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 31
Current: £1,127 GBP|Low: £444 GBP|High: £4,082 GBP|Avg: £1,478 GBP|+0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Taylor and Hart
October 31, 2026
Retailer 13£621 GBP
Retailer 5£768 GBP
Retailer 3£990 GBP
Retailer 10£993 GBP
Retailer 12£1,043 GBP
Retailer 1£1,127 GBP
Retailer 4£1,214 GBP
Retailer 7£1,369 GBP
Retailer 6£1,379 GBP
Retailer 8£1,605 GBP
Retailer 11£2,002 GBP
Retailer 2£2,153 GBP
Retailer 9£2,540 GBP
Taylor and Hart£2,577 GBP

24 data points across 14 retailers

12 retailers£621 GBP to £2,577 GBP

A
Cheapest Retailer
-
£621 GBP
$832 USD
Final sale: no returns
B+
Retailer 2
-
£990 GBP
$1,326 USD
View
B+
Retailer 3
-
£993 GBP
$1,330 USD
View
B+
Retailer 4
-
£1,043 GBP
$1,397 USD
View
B+
Retailer 5
-
£1,127 GBP
€1,438 EUR
View
B+
Retailer 6
-
£1,369 GBP
ZAR 29,643 ZAR
View
B+
Retailer 7
-
£1,379 GBP
A$2,842 AUD
View
B+
Retailer 8
-
£1,605 GBP
$2,150 USD
View
B
Retailer 9
-
£2,002 GBP
View
B
Retailer 10
-
£2,153 GBP
SGD 3,898 SGD
View
B
Retailer 11
-
£2,540 GBP
View
Most Expensive
B
Taylor and Hart
FG6O5JH · Oct 31
£2,577 GBP
$3,453 USD
View
11 more retailers have this diamond
Prices start from £621 GBPSave up to £1,956 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
4.05ct Cushion
£621 GBP