This gem was named in 1790 for William Withering, the English physician and naturalist that first described the mineral. This mineral is rarely faceted due to the scarcity of gem-quality rough and also because witherite dust (a primary component of rat poison) is toxic if inhaled. Cut gems are very small and are typically white or colorless.
- Optical Properties
- Characteristic Physical Properties
- Chemistry & Crystallography
LWUV: Strong bluish white
Countries of Origin
Unknown; United States of America
Very soft and may be attacked by acids. Not suitable for jewelry.