Walking on Amethyst Blocks produces the subtitle "Amethyst chimes" but walking on Amethyst Clusters does not.

What I expected to happen was...:
When walking on Amethyst Blocks, the subtitle "Amethyst chimes" and the noises associated with walking on amethyst occurs, and I expected the amethyst clusters to behave the same way.

What actually happened was...:
Walking on amethyst clusters does not produce the subtitle "Amethyst chimes".

Steps to Reproduce:
1. Walk on an Amethyst Block and the subtitle "Amethyst chimes" will appear.
2. Walk on an Amethyst Cluster and the subtitle "Amethyst chimes" will not appear.