Olympus BHS, 10/0.40 S Plan Apo, brightfield (with very slight crossed polarizers), recorded at 22X on Canon T3i sensor.

The appearance of the one below is different than normally observed due to the lighting used... crossed polarizers with darkfield. It showed some interior birefringent features and more internal details. In "natural" illumination it appeared a uniform greenish-yellow overall.
Olympus BHS, 10/0.40 S Plan Apo, crossed polarizers in darkfield, recorded at 22X on Canon T3i sensor.
