How to find sapphires. Prospecting stickers: stores.ebay.com for stickers How to separate sapphires and ruby (corundum) from river or mine gravels in a sluice and...
Get your own Hydro-Force Nozzle Here: mashdetectors.com Using a Keene High-banker modified to use with a 3" Hydro-Force Suction Nozzle to Power Sluice and Booming...