Consistency+ adds a plethora of new blocks to the table, including decorative obsidian blocks, with crying obsidian variants.
More deepslate building blocks are included too
Make your desert builds stand out with new sandstone blocks, including Soul Sandstone!
Take your ocean builds to the next level with a bunch of new prismarine blocks!
Some small sample structures made using the Consistency+ Blocks
A build I made using some of the C+ Stone blocks
End stone and Purpur are given a lot of love by Consistency+ too. Spice up your end builds with tons of new blocks.
There's many new quartz blocks to mess around with.