Medium Size Wholesale Polished Green Abalone Shells for Sale in Bulk and Individually, Haliotis fulgens for sage smudge bowls and for display, measuring between 5 inches and 5-1/2 inches long.   The rough exterior of the shell has been removed with a chemical process revealing a beautiful iridescent layer of blues, greens, silvers and mother of pearl.   The natural exterior of the shell is usually brown, marked with low, flat ribs, and the interior of the shell is iridescent blue and greens with black and silver accents.