Glowstone
this is used for lighting and decor. Block stone is used for a luminous light areas, including underwater. Has the property of melting the surrounding snow.
Glowing stone found in the Lower World as grapes hanging on the ceiling or on the slopes of hills and similar to corals.
Total fracture always falls less than the amount of light painting you need to re-craft, even if the break glowing stone pickaxe enchanted with "Luck III", so the "farm" so it will not work, and the most economical method of extraction is Kirk enchantment "Silk Touch" .