xray isnt really a mod,its a texture pack added to minecraft that makes all the blocks to 0%,for clearier,it just hide all the blocks only:-
Obsidian
Lava
Water
Standard ores(coal,diamond,butter(GOLD),soap(IRON) and redstone)
Jungle stuff(a.k.a logs,leaves and the jungle ladder)
Wood(wooden planks & wood)
Usable items(chest,crafting table,Furnace,iron/wood door,button/lever,trapdoor etc.)
High-Value stuff(iron,gold,emerald and diamond blocks)

but there a X-ray plugin that makes u unable to watch ores,that replaces the stone to Ores and tnt's,for the video click the spoil down here,yes here V.