Agate is a type of microcrystalline quartz that is characterised by its fine grain and vibrant colours. Agate is known for its banded appearance, with alternating layers of different colours and ...

May’s secondary birthstone is agate. Agate is less rare than emeralds but no less beautiful—the semi-precious stone has been prized for ornamental purposes since ancient times, often being ...

There are thousands of different types of agate across the world, Anderson said. "There's tons of them, tons of variety. So everybody's kind of of obsessed with certain types of formations," he said.

How are agate stones formed? Agates are formed when gas bubbles in lava leave a hole in the "vesicle" in the rock, according to the Michigan Department of Environment, Great Lakes, and Energy.

In his Thursday column, Tim Rowland looks at the death of the New York Times' sports agate page, its dense type and dense information.

A royal slice of agate has gone on display at the Museum. The piece of agate, a type of chalcedony which itself is a variety of quartz, has a pattern resulting from different impurities such as iron ...

Different types of agate vary in price and quality, depending on the attractiveness of the color which adds value to the gemstones. Traders and sellers of the Yemeni onyx and gemstones also said the ...

May’s secondary birthstone is agate. Agate is less rare than emeralds but no less beautiful. The semi-precious stone has been prized for ornamental purposes since ancient times, often being ...

May’s alternative birthstone is agate. "Historically, agate was admired for its protective qualities and was used as a talisman to ward off storms and dangers and to bring balance to the ...