The stone block is a stone that has been extracted from the face of a quarry and is cut into hexagons by some special devices and stone-cutting machines during manufacturing. Basically, all kinds of stone blocks that already have an appropriate geometric shape such as a cube, and which have acceptable dimensions are often transformed into slabs in stonework factories. yet those that their size and geometric shape are not sufficient enough are usually will be transformed into tile shapes.
Stone blocks can be categorized into different grades based on their quality and sizes:
These stones have a distinguished color harmony and there are usually no cracks on them. This kind of stone block has a strongly desirable quality. They are cut into hexagons of large sizes and weigh something between 24 to 27 tons and only one of them at a time can be placed on the trailer used for loading.
These raw stone blocks that are extracted from the quarry's face are smaller in size and dimension compared to single stone blocks. Also, they might have lower quality than single blocks. so in contrast to them, two of these stones can be placed on the trailer used for loading. they might be in cubes or have an irregular geometric shape.
These are smaller stones that weigh much less than single blocks as single blocks may sometimes weigh three times as heavy as them. Carcass stone is even smaller than these dimensions, commonly used in factories to be cut into smaller dimensions and tile shapes.
The exportable stone block known as a "single block" can only be moved or loaded with cranes due to their heavyweight (around 25 Tons). they cover a wide spectrum of qualities and the best of them are being exported to other nations. thus a remarkable part of manufactured and extracted single blocks are being sold for exporting purposes.