Crystaline rather than crystal!

This is probably quartz?  When Eldest heard that I wanted some crystals to photograph she came back with some of her mineral collection.  These are parts of the biggest two!  A natural structure, not cut as for a diamond ring.

I used my canon to take the shot with a 36mm extension tube and a 60 mm lens.  I'm trying to get back to using a camera as opposed to my iPhone.  Not sure why the settings are not showing.

Many thanks to McCaviti for hosting tt this month!