Here’s a nice tanzanite with all the colors; gold, blue, purple, and a bit of red. It’s undamaged, with a solid termination, and changes quite a bit in sunlight and even more under polarized light.
It measures 21 x 10 x 9 mm and weighs 3.2 grams.
https://youtube.com/shorts/122ZIbh2XiM?si=QyX11PwiBAGoUMkk