I have had a great many Dioptase crystals in my life, but only a couple which have featured phantoms. They tend to be very dark when they do, which I currently assume has to do with the generational growth.
I especially like this one because it is the only one I’ve come across on matrix, and with such large crystals! I also like that it has a “castle on the mountain” aesthetic.
Dioptase on Quartz - Van Der Plas Mine, Namibia.
4 x 3.3 x 2 cm.