Some amethyst block variant is placeholder, the note blocks cannot play the chime or new instrument with amethyst block and budding amethyst
It should sound like:
Chime instrument (similarly to packed ice)
Steps to reproduce:
Use creative mode, then you go to search tab in inventory
Search 'amethyst' and looking for amethyst block
Place on the ground (example: place on the grass block)
You search the note block
Place on the amethyst block
Play the note block (right click)
It sounds like default (If you press F3, check the note block debug)
It will be fixed
Thank you for your report!
However, this is a feature request.
Amethyst was never said to produce unique note block sounds. Although it'd be a nice feature, it does not qualify as a bug. For suggestions, head over to the feedback site.
Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki