Tablet

From Silkroad Addiction Wiki

Tablets are Items dropped from monsters while killing them. Level of tablet determines what degree item it can go on (i.e. a Str (Lv8) can go on an 8th degree item). Tablets can be turned into stones using elements. The type and number of each wind, earth, fire and water element depends on each tablet, and is indicated on the bottom of it. Some tablets, like Str and Int are rarer than others.