Block of Lapis Lazuli

Lapis Lazuli Block is a decorative mineral block that is crafted from nine Lapis Lazuli dyes. It is a medium blue color, with darker and lighter blue markings on it. Currently, its only uses are as a decorative block and as a form of storage for Lapis Lazuli dye. It looks very similar to water, which is why it's sometimes used for easily creating water decorations.

Pocket Edition
Used as an expensive building block or compact storage of the ore.

Trivia

 * In real life, Lapis Lazuli is a blue gem that may be ground and processed into ultramarine pigment. Lapis Lazuli pigment has been famously used in the production of illuminated manuscripts, stained glass, and cave paintings. It was also used by Egyptians for their jewelry and other valuable items. (See Wikipedia page).
 * Despite being a mineral block, Lapis Lazuli blocks cannot be used to power up a beacon, as with redstone, quartz and coal blocks.
 * Unlike all of the other mineral blocks, Lapis Lazuli and Redstone blocks have the properties of stone, while the others (block of diamond, block of gold, block of iron, block of coal, and block of emerald) have the same properties of the ore that they're made of.
 * Lapis Lazuli Block is the only mineral block that isn't called "Block of (mineral)".
 * Lapis Lazuli Block is often used to make traps on multiplayer servers, in which the block is placed several blocks down to create the illusion that it is water. When the victim jumps, he often dies or takes much damage.

Lapislazuli-Block Lapis Lazuli (Block)/es Lapis-lazuli (bloc) Lazuritblokk Blocco di Lapislazzuli Lapis lazuli (blok) Lapis Lazuli (blok) Лазурит (блок) 青金石块