[D9VIN]

What is the difference between lava rock lace rock and feather rock? I know that lava rock is often artificial, but the three of them seem pretty dang similar to my untrained eye...

 

[PinoyBoy]

IMO different sources have different names for [almost] the same exact rocks. Lava rock is often real, while lace and feather looks like they used a bubbler while the cement was drying to create those tiny holes/whatever. Atleast that's how the lace rock looks like from my LFS.