Raw baltic amber stones.
Gemstone called chrysoprase
Precious and semi precious stones like citrine lapis lazuli, emeralds, rubies, amethysts, aquamarines, rubella, alexandrite, tourmaline
Obsidian Rough Stones
Electronics, semi conductors, transistors, capacitors, co axial conectors
Clothing, electronic
Travertine block, obsidian, marble, pumice, turkey travertine, turkey pumice
Electronic devices, steel tools, agricultural machines