What a cool idea to make a necklace out of an object, such as a rock. Check out this DIY project!
Wire-Wrapped stone necklace tutorial...Its not in english but the pictures are pretty self explanatory.
Natural River Rock Necklace Engraved with Spiral by SandStudios, $15.00
Macrame Rock Necklace Kids Craft
#11-chose 1:Geode Necklace Festival Necklace Rock Necklace Gypsy by mokamoon
mineral necklaces. amethyst, black/white tourmaline, blue/green amazonite. $95
River Rock necklace More
Step by step rock necklace tutorial
Lavender Spirit Quartz Necklace
How to Hollow out Rocks, to make things like this Cascading River Rock Necklace.