[Porcelina]

Hi! First time posting here, hope I'm in the right spot.
I have been learning to grow crystals and came across a few photos of someone who had used a "copper xylene mixture" to grow metal on previously formed crystals and mentioned suspension. Wondering if anyone here could suggest how he did it? Thank you so much!

[Hunter2]

Which copper compound is soluble in Xylene.  Normally copper ions mostly soluble in water.