This is a rare example of a sceptered quartz crystal which has grown as a scepter head on a clear stem, a crystal with a much smaller diameter which formed in a previous generation.  And, as a bonus, the crystal is double terminated, with sharp points at the end of both the scepter head and the thin stem. The crystal is slightly smoky, but still quite transparent. There are some black anthraxolite inclusions inside the stem, which are fossil remains of a stromatolyte.