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Cushion|Lab Grown|IGI

1.52ct D SI1 Cushion Lab Grown Diamond

EX • D/SI1 • IGI LG621426594

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG621426594

Diamond specifications and retailer prices

From £325 GBP
As of November 6, 2026
9 retailers carry this diamond
Most expensive: £1,479 GBP at Brilliant Earth · As of October 21, 2026
View at Brilliant Earth

About this 1.52ct lab-grown cushion diamond

This 1.52ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG621426594 or 621426594. Listed at 9 retailers as of November 6, 2026. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.52
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle36.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG621426594
Dimensions7.34 × 6.00 × 4.10 mm
L/W Ratio1.22
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
7.34 mm6.00 mm1.52 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG621426594
Side View
Table 64.0%Crown 36.7°Girdle: MED-THKPavilion 36.9°Culet: NoneDepth 68.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £1,479 GBP|Low: £262 GBP|High: £1,524 GBP|Avg: £681 GBP|-2.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 21, 2026
Retailer 10£262 GBP
Retailer 8£291 GBP
Retailer 4£325 GBP
Retailer 11£402 GBP
Retailer 6£403 GBP
Retailer 7£474 GBP
Retailer 9£485 GBP
Retailer 2£513 GBP
Retailer 12£971 GBP
Retailer 3£1,165 GBP
Retailer 5£1,174 GBP
Brilliant Earth£1,479 GBP

28 data points across 12 retailers

9 retailers

Retailer 1
-
£291 GBP
Price last confirmed 21 days ago
A
Retailer 2
-
£325 GBP
View
Retailer 3
-
£403 GBP
View
Price last confirmed 15 days ago
Retailer 4
-
£474 GBP
View
Price last confirmed 16 days ago
Retailer 5
-
£513 GBP
View
Price last confirmed 16 days ago
Retailer 6
-
£971 GBP
View
Price last confirmed 16 days ago
Retailer 7
-
£1,165 GBP
View
Price last confirmed 16 days ago
Retailer 8
-
£1,174 GBP
View
Price last confirmed 19 days ago
Most Expensive
Brilliant Earth
11357873A · Oct 21
£1,479 GBP
$1,980 USD
View
Price last confirmed 16 days ago
8 more retailers have this diamond
Prices start from £325 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
1.52ct Cushion
£325 GBP