Quartz from Malmberget, Norrbotten, Sweden
Size: 65x34x33 mm (109 gr.)
Here is a great rock crystal (Quartz), and what I like with this one is that it is not translucent, and is coated on the backside, which overall gives it an old and "rocky" look.
It is completely undamaged.
Another great thing with this one is that if you study it, you will see that it contains a lot of smaller crystals grown into the bigger one.
Please watch the video for a better view:
I am not sure when it was collected, but my father acquired this one from his friends in Sweden, probably about 15-25 years ago.