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Cushion|Lab Grown|IGI

0.42ct D IF Cushion Lab Grown Diamond

EX • D/IF • IGI LG727543038

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG727543038

Diamond specifications and retailer prices

From £178 GBP
$239 USD
As of November 1, 2026
Save £791 GBP (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £969 GBP at Kay Jewelers · As of November 2, 2026
View at Kay Jewelers

About this 0.42ct lab-grown cushion diamond

This 0.42ct lab-grown cushion sits in the sub-half-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG727543038 or 727543038. Listed at 13 retailers as of November 1, 2026, with prices from £178 to £969, a £791 spread on the same certified stone. Kay Jewelers lists it at £969. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.42
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle37.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG727543038
Dimensions4.75 × 3.94 × 2.71 mm
L/W Ratio1.21
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
4.75 mm3.94 mm0.42 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG727543038
Side View
Table 58.0%Crown 33.7°Girdle: MED-STKPavilion 37.3°Culet: NoneDepth 68.8%

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: Nov 1
Current: £969 GBP|Low: £178 GBP|High: £1,043 GBP|Avg: £624 GBP|-7.1%
Kay Jewelers
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
November 1, 2026
Retailer 6£178 GBP
Retailer 4£254 GBP
Retailer 9£406 GBP
Retailer 2£413 GBP
Retailer 15£418 GBP
Retailer 7£442 GBP
Retailer 13£501 GBP
Retailer 12£590 GBP
Retailer 3£592 GBP
Retailer 5£840 GBP
Retailer 14£858 GBP
Retailer 10£870 GBP
Retailer 8£911 GBP
Kay Jewelers£969 GBP
Retailer 11£969 GBP

29 data points across 15 retailers

13 retailers£178 GBP to £969 GBP

A
Cheapest Retailer
-
£178 GBP
$239 USD
A
Retailer 2
-
£254 GBP
$341 USD
View
B+
Retailer 3
-
£406 GBP
€519 EUR
View
B+
Retailer 4
-
£413 GBP
ZAR 8,956 ZAR
View
B+
Retailer 5
-
£418 GBP
$561 USD
View
B+
Retailer 6
-
£501 GBP
A$1,034 AUD
View
B+
Retailer 7
-
£590 GBP
A$1,218 AUD
View
B+
Retailer 8
-
£592 GBP
CA$1,103 CAD
View
B
Retailer 9
-
£858 GBP
$1,152 USD
View
B
Retailer 10
-
£870 GBP
$1,167 USD
View
B
Retailer 11
-
£911 GBP
View
B
Retailer 12
-
£969 GBP
$1,300 USD
View
Most Expensive
B
Kay Jewelers
256726516 · Nov 2
£969 GBP
$1,300 USD
View
12 more retailers have this diamond
Prices start from £178 GBPSave up to £791 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
0.42ct Cushion
£178 GBP