Thank you Charlotta, SurfnSci and echo!
They are two different pearls - the aubergine one is 13,1mm, from Julia of OceansRhyme on Etsy. It is mounted on a 0,5mm 18K gold wire. I really love how delicate that wire is, the floating isllusion is perfect!
The green-blue one is 12,3mm and from Mila of NoMorePearls. I bought a 1mm rhodium plated silver chain for it and had jewelrer mount it there. I would prefer a more delicate one but at the time I couldn’t find anything suitable. Now I am quite happy with it.
Floating pearls are one of my most worn pieces. I also have two very very dainty floating pearl necklaces, one with a 9mm T my best friend brought me from Tahiti and the other is a 8mm silver blue akoya. They look absolutely tiny next to the bigger pearls.