Top-Ranked Fine-Grained Categories of obsidian: =>see poetic categories

• exotic:item,
• raw:material,
• natural:material,
• hard:material,
• sharp:stone,
• distant:material,
• glassy:material,
• aggregate:material,
• volcanic:rock,
• extrusive:rock,
• abundant:material,
• natural:rock,
• exotic:material,
• semiprecious:stone,
• ornamental:stone,
• polished:rock,
• precious:stone,
• polished:stone,
• homogenous:material,
• glassy:rock,
• crystalline:stone,
• hard:stone,
• darker:stone,
• precious:material,
• igneous:rock,
• durable:object,
• genuine:stone,
• amorphous:solid,
• vitreous:rock,
• glassy:lava,
• porous:mineral,
• volcanic:lava,
• soft:stone,
• metallic:rock,
• black:stone,
• archaeological:deposit,
• geological:material,
• siliceous:rock,
• common:rock,
• individual:item,
• crystalline:material,
• mechanical:unit,
• moving:material,
• resistant:material,
• hard:rock,
• natural:stone,
• amorphous:material,
• precious:mineral,
• sedimentary:rock,
• volcanic:stone,
• sharp:material,
• archaeological:material,
• rare:stone,
• valuable:material,
• siliceous:stone,
• rare:material,
• volcanic:material,
• amorphous:mineral,
• dark:stone,
• vital:material,
• real:stone,
• valuable:mineral,
• vitreous:material,
• vitreous:lava,