It is a common phenomenon that in a high-quality singing bowl the first overtone jumps an octave above the perfect fifth in relation to the fundamental tone. In other words, the ratio between the overtone and the fundamental frequencies isn't 3:2, but 3:1. It is the triple fundamental's frequency or a "third harmonic".
Example: the fundamental 100Hz and the first overtone 300Hz.
Bowls with an interval of an octave between the fundamental tones
PLEASE USE YOUR HEADPHONES FOR THE FOLLOWING VIDEO