Assertion: doublet opal | /r/HasAspect | added benefit
Facets:
Source sentences:
text: Doublet opal also has the added benefit of having genuine opal as the top visible and touchable layer, unlike triplet opals.
text: Doublet opal also has the added benefit of having genuine opal as the top visible and touchable layer, unlike triplet opals.
text: Doublet opal also has the added benefit of having genuine opal as the top visible and touchable layer, unlike triplet opals.