Assertion: baltic amber | /r/Synonym | prussian amber
Facets:
value: historically
type: TEMPORAL
Source sentences:
text: Baltic amber (historically called Prussian amber) is found as irregular nodules in a marine sand, known as blue earth, in the Lower Oligocene strata of Sambia in Kaliningrad Oblast, where it is now systematically mined.
text: Baltic amber (historically called Prussian amber) is found as irregular nodules in a marine sand, known as blue earth, in the Lower Oligocene strata of Sambia in Kaliningrad Oblast, where it is now systematically mined.