Aquatine Lemurian Calcite is a trademark name by Robert Simmons, also known as Aquatine Calcite, Argentinian Blue Onyx or just Blue Onyx. It can be found in a variety of blue shades, often with brown banding.

Aquatine Lemurian Calcite has a calming effect on emotions and brings empathy and support. This crystal helps connect with one's higher consciousness and provides relief from anxiety, depression and fear. Aquatine Lemurian Calcite has a strong connection to water, making it a perfect tool for those who work with water energy or are drawn to aquatic environments.