Sterile Pith Turquoise

Latin sterilis, barren / not-fertile — sharing root with Greek steiros (barren). As a color modifier, sterile implies a clear-and-medical-clean-and-stripped quality, the crisp color of operating-theater surgical-environment white-and-stainless-steel surfaces. Sits at the crisp-and-clean end of the grid, parallel to sanitary and hygienic in usage.

Old English piþa, pith / inner-stalk. As a color modifier, pith implies a soft-inner-stalk-or-core quality, the visual register of bamboo-and-elderberry-and-rattan-pith hand-cut-and-extracted soft-inner-stalk-or-core hand-cut-and-extracted-pith-and-core surfaces under hand-cut-and-extracted-pith-and-core workshop-light. Sits at the modifier-and-texture end of the grid, parallel to cane and bark in usage.

The hydrated copper-aluminum phosphate mined in Persia and the American Southwest for thousands of years — the firuze of Iran, the chalchihuitl of Mesoamerica, the heart of Pueblo and Navajo silverwork. The color refers to a fine Sleeping Beauty turquoise from Arizona: a saturated, slightly green-shifted blue with the slight matrix of host-rock veining. Brighter than persian, lighter than cerulean.