Easy scratch test at home for finding diamonds with normal glass and corrundum

water divining video using coconut and pendulum
• Identify water source
• Predict depth
• Provide recommendations of utilizing a bore well versus wells
• Identify false readings which are caused due to black rock
• Waste water management
• Rain water harvesting
Gem Stone Testing

Видео Easy scratch test at home for finding diamonds with normal glass and corrundum канала LIGHTNING WATER DIVINER