Blue

Apatite is a phosphate mineral that has a hardness of 5 on the Mohs scale, making it too soft to be widely used as a gemstone for jewellery. Apatites

Aquamarine is the pale blue to light green form of beryl. The name aquamarine comes from this mineral's blue/green colour, similar to that of the sea

Lapis Lazuli (also known as Lapis) is known for its intense deep blue shades, mottled with the presence of white calcite and golden flecks of pyrite.