azurite , auch: blue malachite , auch: Chessylite

Azurite was the only natural blue pigment used in early China.

In order to preserve its deep color, azurite was ground coarsely.

The intense color of azurite makes it a popular collector's stone.

The specific gravity of azurite is 3.77 to 3.89.

Pigments made from azurite were less expensive, but tended to turn dark and green with time.

He turned and looked at me, his eyes blue and opaque as azurite.

Azurite: painters used to use it as a pigment.

Azurite was used as a blue pigment for centuries.

The notes were lined in azurite, exactly the sea-blue shade of the dress.

As a result of the high price, artists sometimes economized by using a cheaper blue, azurite, for under painting.

Examples of such minerals are malachite (green) and azurite (blue).

Lazurite at one time was used as a synonym for azurite.

Azurite is also incompatible with aquatic media, such as saltwater aquariums.

Azurite, a form of copper carbonate, was often used as a substitute for ultramarine.

They also used less expensive green earth pigment, or mixed yellow ochre and blue azurite.

She decided to wear the silver and azurite pin Erin had given her for her birthday.

Azurite is soft, with a Mohs hardness of only 3.5 to 4.

Ultramarine withstands heat, but azurite turns to black copper oxide.

However, gentle heating of azurite produces a deep blue pigment used in Japanese painting techniques.

The original indigos of the landscape are lost, while the azurite in Nicodemus's collar has darkened.

Her parents being amateur gemologists, named her after azurite, a semi-precious mineral.

The Virgin Mary's azurite blue robe has degraded into a greenish-black.

In this case, the three grades indicate the use of the mineral azurite rather than a manufactured blue copper carbonate.

Green eyeshadow came from poisonous malachite, while blue came from azurite.

Indians from the Zuni Pueblo taught him how to dig for azurite and use it in his paints.