£1,022 and £1,026 at Finediam, checked 23 Oct, 00:58 UK time: the Amethyst Clover 2.5mm is £4 more.
“Amethyst Clover 2.5mm” in its name, against “Peridot 4mm”.
We don’t test products. Facts are the makers’ and shops’ own words; prices are those we read, with when. A price can change after we read it, and delivery may cost extra.