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 polished green abalone 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 green abalone 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.