Igneous rocks:

* Granite: Topaz is commonly found in granite pegmatites, which are coarse-grained igneous rocks with large crystals.

* Rhyolite: Topaz can also occur in rhyolite, a fine-grained volcanic rock.

Metamorphic rocks:

* Schist: Topaz is sometimes found in metamorphic rocks like schist, which are formed under high pressure and temperature.

Other environments:

* Greisens: Topaz can be found in greisens, which are altered granite rocks.

* Hydrothermal veins: Topaz can also be found in hydrothermal veins, which are formed by hot water circulating through rocks.

Note: Topaz is not found in sedimentary rocks, which are formed from the accumulation of sediments.