hydrophane

mineral

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Last updated

June 17, 2026

Quick Summary

A hydrophane is a specific type of opal, a silica mineral widely used as a gemstone. What makes hydrophane unique is its porous nature; it becomes translucent or even transparent when immersed in water. When dry, it appears semitranslucent, but this property changes dramatically upon contact with liquid. Opals, in general, are known for their play of color caused by light interference within their structure. Hydrophanes are a variety of opal that readily absorb liquids, showcasing a remarkable transformation in appearance.12

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opal
…extremely porous variety, known as hydrophane, can absorb surprising quantities of water; it is almost opaque when dry but nearly transparent when saturated. Light-coloured stones are often dyed to resemble rarer, more deeply coloured varieties.
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…extremely porous variety, known as hydrophane, can absorb surprising quantities of water; it is almost opaque when dry but nearly transparent when saturated. Light-coloured stones are often dyed to resemble rarer, more deeply coloured varieties.
Read More