Symmetrical Advent Turquoise

Greek symmetría, due-proportion — adjectival suffix -al, derived from sym-metron (with-measure). As a color modifier, symmetrical implies a clear-and-balanced-and-mirrored quality where the hue carries the visual register of bilateral-or-radial proportional symmetry. Sits at the crisp-and-balanced end of the grid, parallel to balanced and aligned in usage.

Latin adventus, arrival. As a color modifier, advent implies a December-Pre-Christmas-and-purple quality, the visual register of Roman-Catholic-and-Anglican Advent-period purple-and-pink-vestment-and-wreath-and-candle liturgical surfaces under Advent-period candlelit-purple-and-pink ecclesiastical light. Sits at the modifier-and-time end of the grid, parallel to yule and easter 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.