As a result, the same number say they would be willing to switch to laboratory diamonds in jewellery, such as engagement rings – as they cost up to 85 per cent less
This video shows eagle-eyed Brits put to the test to see if they can spot the difference between a mined diamond and a laboratory-grown diamond.
Couples were stopped in the street and presented with one of each type of diamond â with most struggling to tell the difference.
They were also asked to guess the price difference between mined and lab diamonds â and many were shocked to discover the latter costs up to 85% less.
It comes as a poll of 1,500 would-be husbands and wives revealed seven in ten would consider swapping a traditional, mined diamond, for a lab-grown alternative.