Lapis lazuli is a beautiful opaque gem known for its dark blue hues scattered with golden pyrite flecks.
The most valuable colors of lapis lazuli is a dark blue to almost violet. Golden pyrite inclusions can add to the beauty of lapis while calcite usually detracts from its appearance, and value.
Lapis lazuli has been appreciated for thousands of years, having been discovered decorating ancient Egyptian tombs. Lapis was also ground down and used as a color pigment for dyes and the iconic Egyptian eye shadow!