I wanted to improve the aspect of obsidian, which is after all a glass. Obsidian has a very characteristic fracture profile being an amorphous material (it’s not a crystal), it presents what is called a conchoidal fracture, as seen here (wikipedia).
So I tried somehow replicating that aspect with our Minecraft obsidian. It turns out quite nice. Hope you’ll like it !
HardTop Vanillaccurate 
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