description Howlite Overview
Howlite is a white to gray borate mineral, a calcium borosilicate hydroxide, first identified in 1868 in Nova Scotia and named for the Canadian geologist Henry How. It typically occurs as nodules marked by dark, spiderweb-like veins. Its relatively low hardness allows it to take dye easily, and it is frequently colored to imitate turquoise in jewelry, as well as carved into beads and decorative objects.
help Howlite FAQ
What is howlite made of?
Howlite is a calcium borosilicate hydroxide mineral in the borate group. It is usually white to gray and often shows dark, spiderweb-like veins.
Where was howlite first identified?
Howlite was first identified in Nova Scotia in 1868. It was named after Canadian geologist Henry How.
Why is howlite often dyed blue?
Howlite is porous and relatively soft, so it can be dyed to imitate turquoise. Blue-dyed howlite is commonly sold as a turquoise substitute, but it is not natural turquoise.
Is howlite a hard gemstone?
Howlite is relatively soft, with a Mohs hardness commonly reported around 3 to 3.5. Jewelry made from it should be protected from scratches and harsh impact.
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