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Cushion|Lab Grown|IGI

1.57ct H VS2 Cushion Lab Grown Diamond

VG • H/VS2 • IGI LG570337149

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG570337149

Diamond specifications and retailer prices

From £647 GBP
$869 USD
As of October 31, 2026
Save £204 GBP (24%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £852 GBP at The Diamond Guys · As of November 1, 2026
View at The Diamond Guys

About this 1.57ct lab-grown cushion diamond

This 1.57ct lab-grown cushion sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and VS2 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG570337149 or 570337149. Listed at 2 retailers as of October 31, 2026, with prices from £647 to £852, a £204 spread on the same certified stone. The Diamond Guys lists it at £852. 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

1.57
Carat
H
Colour
VS2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG570337149
Dimensions6.55 × 6.48 × 4.56 mm
L/W Ratio1.01
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
6.55 mm6.48 mm1.57 ctH / VS2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG570337149
Side View
Table 62.5%Crown 34.4°Girdle: STK-VTKPavilion 39.8°Culet: NoneDepth 70.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 31
Current: £647 GBP|Low: £283 GBP|High: £1,468 GBP|Avg: £813 GBP
Retailer 1
Retailer 2
Retailer 3
The Diamond Guys
September 30, 2026
Retailer 2£283 GBP
Retailer 1£647 GBP
The Diamond Guys£852 GBP
Retailer 3£1,468 GBP

4 data points across 4 retailers

2 retailers£647 GBP to £852 GBP

B+
Cheapest Retailer
-
£647 GBP
$869 USD
Most Expensive
B
The Diamond Guys
1980424079 · Nov 1
£852 GBP
$1,143 USD
View
1 more retailer has this diamond
Prices start from £647 GBPSave up to £204 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+
1.57ct Cushion
£647 GBP