geobotanical prospecting

Many times gold has been found, experts say: Wherever there is this plant, there may be treasure
In history, there have been many records documenting the correlation between plants and soil containing minerals.
Many times after digging up diamonds, geologists discovered: Wherever there is this tree, there may be treasure
The natural world always hides interesting things. As we all know, plants usually grow on soil, sand or water, but, the plants below grow in areas with diamonds.