A book on crystal healing or geology, such as "The Crystal Bible" by Judy Hall or "Rocks, Minerals and Gemstones" by Patti Polk.
Quartz crystals: Clear or colored quartz crystals are popular with customers and are available in many different sizes.
Agate slices: These colorful slices of agate can be used as coasters or displayed as decorative items.
Geode halves: Customers love to see the inside of geodes, and selling them in halves allows them to see the crystals inside.
Crystal point pendants: These small, polished crystal points can be used as pendants or for meditation and are a popular gift item.
Tumbled stones: Tumbled stones are popular for their smooth finish and variety of colors and can be sold individually or in sets.
Rose quartz hearts: Rose quartz is known for its healing properties and is a popular gift item.
Pyrite cubes: These small, shiny cubes are popular with collectors and those interested in the mineral's metallic properties.
Selenite wands: Selenite is a popular mineral for its cleansing energy, and the wand shape is perfect for meditation and energy work.
Fossils: Small fossils, such as ammonites or trilobites, are popular with collectors and make great gift items.