RegenOres Mod 1.7.10.
At the renaissance times people used to feel that minerals and stone and ores could”grow” again in the seas, so they would quit mining for a month or possibly a year, then proceed digging. This mod recreates that when you mine an ore, it has a rare chance to darken and regenerate through the years. Common ores Like Coal regenerate quicker than rare ores like Emerald or Diamond (by default).