The Erongo mountains of Namibia produce some of the bluest aquamarine crystals on Earth. This one is beefy, deeply saturated and aesthetically shaped with zero imperfections. There’s a bit of iron that can be cleaned and rainbows inside the partially open C axis.
It measures 52 x 25 x 19 mm and weighs 25.54 grams.
https://youtu.be/bBZAtTAnbYE