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This, I can't honestly say is realistic lava, but it's close, in my opinion. I intended to make a simple Lava Texture to render that seamlessly tiles well enough to find possible use in video games or similar applications. The result was interesting, but I do wish the highlights were a bit more prominent without compromising the lava's incandescence
Lava Magma Molten Rock Cracks Cracked Geothermal