Heavy Chili Tanzanite

Old English hefig, weighty — cognate with heave. Used as a color modifier since at least the seventeenth century to indicate weight in saturation as much as value: heavy with pigment, heavy-bodied. In the engine's adjective grid, heavy sits alongside deep and plush in the dark-and-saturated quadrant. Closer to a fabric description than a pure value word.

Nahuatl chīlli, capsicum-fruit. As a color modifier, chili implies a Mesoamerican-capsicum-and-fiery quality, the visual register of Mesoamerican-and-Oaxacan-chili hand-Mesoamerican-capsicum-and-fiery Mesoamerican-and-Oaxacan-chili-and-Yucatec-and-Veracruzano chili-and-Mesoamerican-capsicum surfaces under Mesoamerican-and-Oaxacan-chili-and-Yucatec-and-Veracruzano Oaxaca-and-Veracruz-and-Yucatán Mesoamerican-spice-light. Sits at the modifier-and-flavor end of the grid, parallel to pepper and pimento in usage.

A blue-violet variety of zoisite — discovered in 1967 in a single small area of northern Tanzania near Mount Kilimanjaro and marketed by Tiffany & Co. shortly after. The color refers to a faceted tanzanite cut to maximize its strong pleochroism: a saturated, slightly violet-shifted deep blue-purple with the gem's signature internal life. Cooler than amethyst, warmer than iolite, with the gem-trade specificity of a stone that occurs in exactly one place on Earth.