My new favorite mystery glass necklace on silver clasp with some marks

Lovely glass beads ombre colors from blue light to blu viola, glass was covered, absolutely amazing and pleasant on the skin. Possibly that's is MWF Ikora & Myra Kristall beads? This colors i didn't fined. May be someone have seeing something similar before, item vintage, non new, clasp quality original has 925, simbol and very small one mark , impossible to read. Thanks for any comments.