Tumbled Howlite Value Guide

Tumbled Howlite is a sought-after borate mineral first discovered in 1868 by Henry How in Nova Scotia. These 2020-2024 specimens are prized for their distinct marble-like appearance and their historical significance as a versatile material in the gemstone trade.

What affects the value of Tumbled Howlite?

• The clarity and contrast of the grey and black veining against the white background.
• The quality of the tumble and polish, ensuring no deep pits or cracks remain.
• The size and weight of the individual stone, with larger specimens reaching the $4 range.
• The authenticity of the mineral as natural Howlite rather than a synthetic imitation.

How to Identify Tumbled Howlite?

• Look for a characteristic opaque white base color with irregular grey or black spider-web veining.
• Verify the porous texture which is a hallmark of authentic Canadian Howlite.
• Check for a smooth, polished finish typical of modern 2020-2024 tumbling processes.
• Ensure the stone is not dyed, as natural Howlite should only exhibit white and grey tones.

History of Tumbled Howlite

First discovered in 1868 by Henry How near Windsor, Nova Scotia, this borate mineral is famous for its marble-like appearance. It is a common 'imitation' stone because its porous nature allows it to be dyed to resemble turquoise or coral, but it is highly valued in its natural form for its calming aesthetic.