Although K2 Jasper is the most commonly used name for marketing this material, it is definitely not jasper. If you examine the rock with a magnifying glass, you will see cleavage faces of feldspar minerals and black flakes of biotite.
For your consideration is this pretty Azurite in Granite sphere from Pakistan. In it Azurite comes in dark blue shade or rather navy blue. There are a few inclusions of Pyrite on the sphere's surface as well.
The sphere measures 52 mm in diameter, and weighs 193 g.
Pictures are taken outdoor in sunlight.
Combined postage available.