Feature

●These unglazed porcelain plates are sized for field and lab testing.
●Rubbing the specimen across the plate reveals its streak color.
●White plates work with dark minerals.


Description

WARD9- WARD9-45 Streak color helps identify minerals. Plates Sized for Field and Lab Testing Unglazed Porcelain Black Plates Work with Light Minerals These unglazed porcelain plates are sized for field and lab testing. Rubbing the specimen across the plate reveals its streak color. Black plates work with light minerals.