1. Mustika Delima Merah (The one that can make water red can fetch up to USD10k++..)
2. Mustika: Embun (dew), Air (water) etc.
2. Bezoar: Snake, Boar, Deer, Crocodile etc.
3. Pearls: Fish, scropion, centipede, millipede etc.
4. Stones: fossils, thunder stones, strange rocks etc.
5. Plants: bamboo, leaves, etc.
6. And many-many more.
A search in the intranet will find all the above but not limited array of items that is out of our imagination. Local folks believe these strange "barang" has powerful khodam and can bring "luck" or protect from harm. Many prominent people carrys at least one big ring made from these "barang".
Oh.. before I forget, all the "barang" must be pulled from their hiding places after an exchange of offering with the "penunggu" or the "watcher". If the item is filled manually, then the power is limited and would not fetch good price... Well, you decide ;-)