Bright Red on Green Echinophyllia Coral. This is a nice sized Intense Ruby Red on a deep Emerald Green skin. This Echino or Chalice is roughly 2 inches long and 1 to 1.5 inches wide. It came in rather plain but after a few weeks it has begun to GLOW. That is not a joke, it really does radiate an incredibly intense red color magnified by its base color of green.