Azurite,
frequently occurring mineral from the mineral class of carbonates and nitrates. Its characteristic color is deep blue ("azure"). Azurite is also found in other rocks again, usually in the form of small crystals embedded (e.g. azurite-malachite or azurite in granite).

 

Granite,
massive and relatively coarse-crystalline magmatic rocks (plutonites), which are rich in quartz and feldspar, but also contain dark minerals, especially mica.