its blue-to-green color set by copper and iron

5 across it—which is why lapidaries work it with such care

Its use as an adornment stone extends across cultures for thousands of years

Named for Selene

The Grounding Set Supportive its blue-to-green color set byFive stones from five different mineral familieseach with its own geological character, each with a long history in protective and grounding traditions. Black Tourmaline is a boron silicate mineral in the schorl variety, Mohs 77. 5, piezoelectric and strongly associated with grounding in lapidary tradition. Amethyst is violet quartz colored by trace iron and natural irradiation, Mohs 7. Obsidian is rapidly cooled volcanic glassa mineraloid rather than