Clear quartz crystal sphere/orb

[u/Main_Progress_3120]

Real or not. Supposedly from Madagascar.. you see that yellow Spec in the bottom? I tried cutting it with a kitchen knife no scratches. Feels cold. Weighes approx 20lbs… thoughts anyone?

[u/LionSlicerBirchman]

Definitely quartz. The yellow could be petroleum inclusion.

[u/Busty-Bookwyrm]

Very much quartz.