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Cushion|Lab Grown|IGI

1.52ct G SI1 Cushion Lab Grown Diamond

VG • G/SI1 • IGI LG400934998

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

Certificate IGI LG400934998

Diamond specifications and retailer prices

From £307 GBP
$411 USD
As of November 1, 2026
Save £316 GBP (51%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £623 GBP at Rare Carat · As of November 1, 2026
View at Rare Carat

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 G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG400934998 or 400934998. Listed at 3 retailers as of November 1, 2026, with prices from £307 to £623, a £316 spread on the same certified stone. Rare Carat lists it at £623. 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

1.52
Carat
G
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG400934998
Dimensions6.71 × 6.43 × 4.24 mm
L/W Ratio1.04
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
6.71 mm6.43 mm1.52 ctG / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG400934998
Side View
Table 67.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 65.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £623 GBP|Low: £288 GBP|High: £634 GBP|Avg: £413 GBP|-1.8%
Rare Carat
Retailer 2
Retailer 3
November 1, 2026
Retailer 3£307 GBP
Retailer 2£317 GBP
Rare Carat£623 GBP

40 data points across 3 retailers

3 retailers£307 GBP to £623 GBP

B+
Cheapest Retailer
-
£307 GBP
$411 USD
B+
Retailer 2
-
£317 GBP
View
Most Expensive
B
Rare Carat
26A400934998 · Nov 1
£623 GBP
$835 USD
View
2 more retailers have this diamond
Prices start from £307 GBPSave up to £316 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.

B+
1.52ct Cushion
£307 GBP