Diamond ore blocks are light grey with aquamarine flecks. While they previously spawned at y-levels 1-15, the Caves and Cliffs update (also known as version 1.17) changed the spawn point for ...

However, do keep in mind that if a Diamond is about to spawn near an open-air block when you are generating ... earlier ...

Dialing in the right colors took some work, but eventually, [Ryan] had an Android-controlled Minecraft ore block, able to transmutate between gold, iron, diamond, emerald, lapis, and redstone.