Iridescent Isis Malachite

Latin Īris, rainbow — adjectival suffix -escent, named for the Greek goddess of the rainbow. As a color modifier, iridescent implies a saturated-and-multi-spectrum-shifting quality, the bright color of peacock-feather-and-soap-bubble structurally-colored-and-thin-film optical-interference patterns. Sits at the bright-and-shifting end of the grid, parallel to prismatic and holographic in usage.

Egyptian Aset, throne-and-mother-goddess. As a color modifier, isis implies a winged-and-throne-and-mother-goddess quality, the visual register of Egyptian-Isis-and-Philae-temple hand-winged-and-throne-and-mother-goddess Egyptian-Isis-and-Philae-temple-and-Osirian-myth isis-and-winged-and-throne-and-mother-goddess surfaces under Egyptian-Isis-and-Philae-temple-and-Osirian-myth Nile-and-Philae-Aswan-temple winged-throne-light. Sits at the modifier-and-myth end of the grid, parallel to horus and thoth in usage.

A copper carbonate mineral — Cu₂CO₃(OH)₂ — that crystallizes as concentric green bands in oxidized copper deposits. Mined for ornamental stone since ancient Egypt, ground into pigment for medieval European painting, polished into the malachite columns of the Russian Hermitage. The color refers to a polished cabochon: a saturated, slightly muted green with the high shine of stone and the visible banding of growth rings.