Assertion: obsidian's sheen | /r/HasProperty | rainbow obsidian
Facets:
Source sentences:
text: These bubbles can produce interesting effects such as a golden sheen (sheen obsidian).An iridescent, rainbow-like sheen ( rainbow obsidian ) is caused by inclusions of magnetite nanoparticles.
text: These bubbles can produce interesting effects such as a golden sheen (sheen obsidian).An iridescent, rainbow-like sheen ( rainbow obsidian ) is caused by inclusions of magnetite nanoparticles.