View the Surface Imperfections (Glass On Surface, Mineral Bloom) chart.
Splay (Silver Streaking)
View the Splay (Silver Streaking) chart.
Lamination
View the Lamination chart.
Flow Lines
View the Flow Lines chart.
Discoloration, Contamination
View the Discoloration, Contamination chart.
Dimensional Variations
View the Dimensional Variations chart.
Cracking, Crazing
View the Cracking, Crazing chart.
Burn Marks
View the Burn Marks chart.
Bubbles, Voids
View the Bubbles, Voids chart.
Brittleness
View the Brittleness chart.