Heavy Sparta 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.

Greek Σπάρτη, Sparta. As a color modifier, sparta implies a Lacedaemonian-and-warrior-city-state quality, the visual register of Spartan-Lacedaemonian-City-State hand-built bronze-armor-and-crimson-tunic-and-stone-temple Doric-warrior-state surfaces under Lacedaemonian-Sparta-and-Eurotas-Valley Doric-warrior-state Greek-Peloponnese light. Sits at the modifier-and-cultural end of the grid, parallel to athens and roman 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.