_ _ _ _ _ _ Egg; a kind of grue in two words
Aphrodite, Aqua, Beryl gr~, BlueTurquoise, Cambridge B~, Cameo B~, Cascade, Dryad, Eton B~, Empirical, Lumiere B~, Niagara gr~, Nile B~, Sulphate gr~, Tourmaline, Turquoise, Tyrolite gr~, Venet, Varna, Yama.