Quartz Blocks are solid building materials in the game Minecraft. They are crafted from Nether Quartz, which is obtained by mining Nether Quartz Ore found in the Nether dimension. Quartz Blocks have a smooth, white appearance and are often used for decorative purposes in structures due to their clean look. In addition to their aesthetic appeal, Quartz Blocks are also durable and can be used in various crafting recipes. Players can create Chiseled Quartz Blocks and Quartz Pillars for added design options. Overall, Quartz Blocks are a versatile choice for both functional and decorative building in Minecraft.