GST classification change: omission of worked mica from Schedule alters applicable rate and post-omission treatment under notifications. Goods in Schedule 4 were subject to a higher GST rate; the Schedule 4 entry for worked mica and articles of mica (including agglomerated or reconstituted mica, whether or not on a support of paper, paperboard or other materials) was omitted by notification no. 43/2017 with effect from 15-11-2017, removing that specific listing and its prior rate treatment.